detection.wiki

Microsoft-Windows-BranchCache

EventTitleChannelSampleRule
1The BranchCache service started successfully.OperationalYN
2The BranchCache service stopped successfully.OperationalYN
3The BranchCache service detected that this computer roamed to a different …OperationalNN
4The BranchCache service failed to start.OperationalYN
5A BranchCache configuration change was detected.OperationalNN
6This computer is configured as a Hosted Cache server and it is also configured …OperationalNN
7A firewall is blocking inbound traffic on UDP port 3702, which is used to …OperationalNN
8A firewall is blocking inbound traffic on TCP port 80, which is used to serve …OperationalNN
9A firewall is blocking inbound traffic on TCP port 443, which is used by the …OperationalNN
10The BranchCache service cannot start because the HTTP namespace used for serving …OperationalYN
11Content was not cached.OperationalNN
12BranchCache cannot publish the content at location Error.OperationalNN
13BranchCache cannot publish the content with content-id: ContentId because the …OperationalNN
14A request message sent to another BranchCache client failed.OperationalNN
15A request message sent to the Hosted Cache server failed.OperationalNN
16A BranchCache client or hosted cache server was unresponsive or provided invalid …OperationalNN
17A request message from another BranchCache client was dropped because it was not …OperationalNN
18A content retrieval request from another BranchCache client was denied.OperationalNN
19BranchCache tried to offer content to the Hosted Cache server on Error, but …OperationalNN
20BranchCache tried to offer content to the Hosted Cache server on …OperationalNN
21Count instance(s) of event id EventId occurred.OperationalNN
22The Windows Firewall rules for the BranchCache service are not configured …OperationalNN
23The BranchCache service could not be started because it has been disabled.OperationalNN
24The BranchCache service started, but was unable to load the cache file from disk …OperationalNN
25The BranchCache service started and loaded a cache file from disk.OperationalYN
26BranchCache saved a cache file to disk.OperationalYN
27The BranchCache service stopped and was unable to save the cache file to disk.OperationalNN
28The BranchCache service is stopping.OperationalYN
29An SSL certificate is not bound to the port Port on the Hosted Cache server.OperationalNN
30BranchCache cannot initialize the local cache at location Error.OperationalNN
31A request message sent to a Hosted Cache client failed.OperationalNN
32The size of the republication cache store at Path is too small.OperationalNN
33The size of the publication cache store at Path is too small.OperationalNN
34BranchCache failed to register a service connection point.OperationalNN
35BranchCache failed to update a service connection point.OperationalNN
36BranchCache failed to delete a service connection point.OperationalNN
37BranchCache failed to discover a service connection point.OperationalNN
38BranchCache completed defragmentation of the republication cache store at Error.OperationalNN
39It is recommended that you consider defragmentation of the republication cache …OperationalNN
40Client request was dropped because allowable simultaneous uploads limit was …OperationalNN
41BranchCache cannot start because another application or service is listening on …OperationalNN

Event ID 1: The BranchCache service started successfully.

#
Channel
Operational
Level
Informational
Opcode
Info

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BranchCache",
    "guid": "{7EAFCF79-06A7-460B-8A55-BD0A0C9248AA}",
    "event_source_name": "",
    "event_id": 1,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": -9223372036854775808,
    "time_created": "2026-05-30T04:03:32.7794465+00:00",
    "event_record_id": 1,
    "correlation": {},
    "execution": {
      "process_id": 9124,
      "thread_id": 8160
    },
    "channel": "Microsoft-Windows-BranchCache/Operational",
    "computer": "JD-WIN11-22H2-1.ludus.domain",
    "security": {
      "user_id": "S-1-5-20"
    }
  },
  "event_data": {},
  "message": "The BranchCache service started successfully."
}

Event ID 2: The BranchCache service stopped successfully.

#
Channel
Operational
Level
Informational
Opcode
Info

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BranchCache",
    "guid": "{7EAFCF79-06A7-460B-8A55-BD0A0C9248AA}",
    "event_source_name": "",
    "event_id": 2,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": -9223372036854775808,
    "time_created": "2026-05-30T04:15:22.1019452+00:00",
    "event_record_id": 4,
    "correlation": {},
    "execution": {
      "process_id": 9124,
      "thread_id": 5752
    },
    "channel": "Microsoft-Windows-BranchCache/Operational",
    "computer": "JD-WIN11-22H2-1.ludus.domain",
    "security": {
      "user_id": "S-1-5-20"
    }
  },
  "event_data": {},
  "message": "The BranchCache service stopped successfully."
}

Event ID 3: The BranchCache service detected that this computer roamed to a different location.

#
Channel
Operational
Opcode
Info

Description

The BranchCache service detected that this computer roamed to a different location. Group Policy settings will refresh.

Message #

The BranchCache service detected that this computer roamed to a different location. Group Policy settings will refresh.

Event ID 4: The BranchCache service failed to start.

#
Channel
Operational
Level
Error
Opcode
TheBranchCacheserviceisstartingup.

Message #

The BranchCache service failed to start.

Error: %1 %2

Fields #

NameDescription
ErrorCode UInt32
ErrorMessage UnicodeString

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BranchCache",
    "guid": "7EAFCF79-06A7-460B-8A55-BD0A0C9248AA",
    "event_source_name": "",
    "event_id": 4,
    "version": 0,
    "level": 2,
    "task": 0,
    "opcode": 10,
    "keywords": 9223372036854775808,
    "time_created": "2026-07-19T19:12:54.139335+00:00",
    "event_record_id": 6,
    "correlation": {},
    "execution": {
      "process_id": 3852,
      "thread_id": 3896
    },
    "channel": "Microsoft-Windows-BranchCache/Operational",
    "computer": "JD-DC01-2022.ludus.domain",
    "security": {
      "user_id": "S-1-5-20"
    }
  },
  "user_data": {
    "ServiceStartupFailedEvent": {
      "ErrorCode": 5,
      "ErrorMessage": "Access is denied.\r\n"
    }
  },
  "message": ""
}

Event ID 5: A BranchCache configuration change was detected.

#
Channel
Operational
Opcode
Info

Fields #

NameDescription
SubKey UnicodeString
ValueName UnicodeString
SettingType UInt32
UInt32 UInt32
UInt64 UInt64
String UnicodeString
BinaryLength UInt32
Binary Binary

Event ID 6: This computer is configured as a Hosted Cache server and it is also configured to use a Hosted Cache.

#
Channel
Operational
Opcode
TheBranchCacheserviceisstartingup.

Description

This computer is configured as a Hosted Cache server and it is also configured to use a Hosted Cache. Only one of these options is allowed.

Message #

This computer is configured as a Hosted Cache server and it is also configured to use a Hosted Cache. Only one of these options is allowed.

Event ID 7: A firewall is blocking inbound traffic on UDP port 3702, which is used to discover the availability of cached content on this computer.

#
Channel
Operational
Opcode
TheBranchCacheserviceisstartingup.

Description

A firewall is blocking inbound traffic on UDP port 3702, which is used to discover the availability of cached content on this computer. Other computers on the network cannot discover this client.

Message #

A firewall is blocking inbound traffic on UDP port 3702, which is used to discover the availability of cached content on this computer. Other computers on the network cannot discover this client. 

To create a Windows Firewall rule that allows traffic on UDP port 3702, run the command "Enable-BCDistributed" from an elevated PowerShell command prompt. If a different firewall is used, modify the firewall settings to allow this traffic.

Event ID 8: A firewall is blocking inbound traffic on TCP port 80, which is used to serve content to requesting computers.

#
Channel
Operational
Opcode
TheBranchCacheserviceisstartingup.

Description

A firewall is blocking inbound traffic on TCP port 80, which is used to serve content to requesting computers. As a result, other computers on the network, including the Hosted Cache server, cannot retrieve content from this client. To create a Windows Firewall rule that allows inbound traffic on TCP port 80, run the enable cmdlet appropriate to your service mode from an elevated PowerShell command prompt. If a different firewall is used, modify the firewall settings to allow this traffic.

Message #

A firewall is blocking inbound traffic on TCP port 80, which is used to serve content to requesting computers. As a result, other computers on the network, including the Hosted Cache server, cannot retrieve content from this client. 

To create a Windows Firewall rule that allows inbound traffic on TCP port 80, run the enable cmdlet appropriate to your service mode from an elevated PowerShell command prompt. If a different firewall is used, modify the firewall settings to allow this traffic.

Event ID 9: A firewall is blocking inbound traffic on TCP port 443, which is used by the Hosted Cache server for accepting incoming client offers to add content.

#
Channel
Operational
Opcode
TheBranchCacheserviceisstartingup.

Description

A firewall is blocking inbound traffic on TCP port 443, which is used by the Hosted Cache server for accepting incoming client offers to add content. As a result, clients cannot add content to the Hosted Cache. To create a Windows Firewall rule that allows inbound traffic on TCP port 443, run the command "Enable-BCHostedServer" from an elevated PowerShell command prompt. If a different firewall is used, modify the firewall settings to allow this traffic.

Message #

A firewall is blocking inbound traffic on TCP port 443, which is used by the Hosted Cache server for accepting incoming client offers to add content. As a result, clients cannot add content to the Hosted Cache. 

To create a Windows Firewall rule that allows inbound traffic on TCP port 443, run the command "Enable-BCHostedServer" from an elevated PowerShell command prompt. If a different firewall is used, modify the firewall settings to allow this traffic.

Event ID 10: The BranchCache service cannot start because the HTTP namespace used for serving content to requesting clients is not reserved.

#
Channel
Operational
Level
Error
Opcode
TheBranchCacheserviceisstartingup.

Message #

The BranchCache service cannot start because the HTTP namespace used for serving content to requesting clients is not reserved. 

Run the enable cmdlet appropriate to your service mode from an elevated PowerShell command prompt.

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BranchCache",
    "guid": "{7EAFCF79-06A7-460B-8A55-BD0A0C9248AA}",
    "event_source_name": "",
    "event_id": 10,
    "version": 0,
    "level": 2,
    "task": 0,
    "opcode": 10,
    "keywords": -9223372036854775808,
    "time_created": "2026-06-13T13:38:19.7150080+00:00",
    "event_record_id": 1,
    "correlation": {},
    "execution": {
      "process_id": 7544,
      "thread_id": 5036
    },
    "channel": "Microsoft-Windows-BranchCache/Operational",
    "computer": "telemetry-DC-d.cell-d.ludus.domain",
    "security": {
      "user_id": "S-1-5-20"
    }
  },
  "event_data": {},
  "message": "The BranchCache service cannot start because the HTTP namespace used for serving content to requesting clients is not reserved. \r\nRun the enable cmdlet appropriate to your service mode from an elevated PowerShell command prompt."
}

Event ID 11: Content was not cached.

#
Channel
Operational
Opcode
Republishingcontent_makingcontentavailabletoothersinthebranchoffice.

Description

Content was not cached. BranchCache cannot free enough space in the local cache to accommodate the content being added.

Message #

Content was not cached. BranchCache cannot free enough space in the local cache to accommodate the content being added. 

The maximum cache size is %1 MB.

To increase the cache size, run the command "Set-BCCache" from an elevated PowerShell command prompt and ensure that the disk where the local cache is saved has enough free space.

Fields #

NameDescription
CacheSize UInt32

Event ID 12: BranchCache cannot publish the content at location Error.

#
Channel
Operational
Opcode
Publishingcontentontheserver.

Message #

BranchCache cannot publish the content at location %1.

Error: %2 %3

This might be because the publication directory location is not on an NTFS partition, the path is too long (typically, greater than 190 characters) or does not exist, or the BranchCache service does not have the permissions to write to the directory location. 

Run the command "Set-BCCache" from an elevated PowerShell command prompt.

Fields #

NameDescription
Path UnicodeString
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 13: BranchCache cannot publish the content with content-id: ContentId because the publication cache size was exceeded or the disk does not have enough space.

#
Channel
Operational
Opcode
Publishingcontentontheserver._0_12

Message #

BranchCache cannot publish the content with content-id: %2 because the publication cache size was exceeded or the disk does not have enough space.

Error: %3 %4

Run the command "Set-BCCache" from an elevated PowerShell command prompt to increase the cache size.

Fields #

NameDescription
cbContentId UInt16
ContentId Binary
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 14: A request message sent to another BranchCache client failed.

#
Channel
Operational
Opcode
Downloadingcontent.

Message #

A request message sent to another BranchCache client failed.

Error: %6 %7

Fields #

NameDescription
cbSegmentId UInt32
SegmentId Binary
BlockId UInt32
PeerAddress UnicodeString
MessageType UInt32
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 15: A request message sent to the Hosted Cache server failed.

#
Channel
Operational
Opcode
Downloadingcontent.

Message #

A request message sent to the Hosted Cache server failed.

Error: %6 %7

Fields #

NameDescription
cbSegmentId UInt32
SegmentId Binary
BlockId UInt32
HostedCacheAddress UnicodeString
MessageType UInt32
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 16: A BranchCache client or hosted cache server was unresponsive or provided invalid data.

#
Channel
Operational
Opcode
Downloadingcontent.

Description

A BranchCache client or hosted cache server was unresponsive or provided invalid data. For the next MinutesOfQuarantine minute(s), BranchCache will not attempt to download data from this machine.

Message #

A BranchCache client or hosted cache server was unresponsive or provided invalid data. For the next %2 minute(s), BranchCache will not attempt to download data from this machine.

Fields #

NameDescription
PeerAddress UnicodeString
MinutesOfQuarantine UInt32

Event ID 17: A request message from another BranchCache client was dropped because it was not valid.

#
Channel
Operational
Opcode
Downloadingcontent.

Message #

A request message from another BranchCache client was dropped because it was not valid.

Remote client address: %1

Error: %3 %4

Fields #

NameDescription
FromAddress UnicodeString
MessageType UInt32
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 18: A content retrieval request from another BranchCache client was denied.

#
Channel
Operational
Opcode
Downloadingcontent.

Message #

A content retrieval request from another BranchCache client was denied.

Remote client address: %1

Error: %2 %3

Fields #

NameDescription
PeerAddress UnicodeString
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 19: BranchCache tried to offer content to the Hosted Cache server on Error, but there was an error connecting to the Hosted Cache server.

#
Channel
Operational
Opcode
Offeringcontenttohostedcache.

Message #

BranchCache tried to offer content to the Hosted Cache server on %1, but there was an error connecting to the Hosted Cache server. 

Error: %2 %3 

Possible reasons for this error:

-the client has been configured with an incorrect Hosted Cache server name

-the client has been configured with an incorrect Hosted Cache server port

-the firewall on the Hosted Cache server is blocking communication

-the hosted cache server has not been configured with a certificate trusted by the client

-the client has been configured to use TLS when communicating with the hosted cache, but the hosted cache has not been configured to use TLS

-the client has been configured to not use TLS when communicating with the hosted cache, but the hosted cache has not been configured to expect TLS



The client can be configured by running the "netsh branchcache set service hostedclient location=[HOSTEDSERVER]" command from an elevated prompt.

The Hosted Cache server can be configured by running the "netsh branchcache set service hostedserver" command from an elevated prompt.



For advanced configuration and information about certificate deployment on a Hosted Cache server, please see the BranchCache deployment guide.

Fields #

NameDescription
HostedCacheLocation UnicodeString
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 20: BranchCache tried to offer content to the Hosted Cache server on HostedCacheLocation, but the request timed out.

#
Channel
Operational
Opcode
Offeringcontenttohostedcache.

Description

BranchCache tried to offer content to the Hosted Cache server on HostedCacheLocation, but the request timed out. The Hosted Cache server might be experiencing heavy loads or might not be reachable because of network or authentication issues.

Message #

BranchCache tried to offer content to the Hosted Cache server on %1, but the request timed out. The Hosted Cache server might be experiencing heavy loads or might not be reachable because of network or authentication issues.

Fields #

NameDescription
HostedCacheLocation UnicodeString

Event ID 21: Count instance(s) of event id EventId occurred.

#
Channel
Operational
Opcode
Info

Message #

%2 instance(s) of event id %1 occurred.

Fields #

NameDescription
EventId UInt32
Count UInt32

Event ID 22: The Windows Firewall rules for the BranchCache service are not configured correctly.

#
Channel
Operational
Opcode
Info

Message #

The Windows Firewall rules for the BranchCache service are not configured correctly. 

Run the enable cmdlet appropriate to your service mode from an elevated PowerShell command prompt to set the Windows Firewall configuration correctly.

Event ID 23: The BranchCache service could not be started because it has been disabled.

#
Channel
Operational
Opcode
Info

Message #

The BranchCache service could not be started because it has been disabled. 

Use the Services snap-in console to set the Startup Type for the BranchCache service to "Manual" on client computers and to "Automatic" on server computers.

Event ID 24: The BranchCache service started, but was unable to load the cache file from disk because the cache file was corrupted or was an incompatible version.

#
Channel
Operational
Opcode
Loadinglocalcache.

Message #

The BranchCache service started, but was unable to load the cache file from disk because the cache file was corrupted or was an incompatible version.

Sub code: %2

Error: %1 %3

Fields #

NameDescription
ErrorCode UInt32
SubCode UInt32
ErrorMessage UnicodeString

Event ID 25: The BranchCache service started and loaded a cache file from disk.

#
Channel
Operational
Level
Informational
Opcode
Loadinglocalcache.

Fields #

NameDescription
LoadPersistedCacheSucceededEvent.Timestamp SYSTEMTIME
Timestamp SYSTEMTIME

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BranchCache",
    "guid": "{7EAFCF79-06A7-460B-8A55-BD0A0C9248AA}",
    "event_source_name": "",
    "event_id": 25,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 16,
    "keywords": -9223372036854775808,
    "time_created": "2026-05-30T04:03:35.6027279+00:00",
    "event_record_id": 2,
    "correlation": {},
    "execution": {
      "process_id": 9124,
      "thread_id": 14668
    },
    "channel": "Microsoft-Windows-BranchCache/Operational",
    "computer": "JD-WIN11-22H2-1.ludus.domain",
    "security": {
      "user_id": "S-1-5-20"
    }
  },
  "user_data": {
    "LoadPersistedCacheSucceededEvent": {
      "Timestamp": "1601-01-01T00:00:00.0000000Z"
    }
  },
  "message": "The BranchCache service started and loaded a cache file from disk."
}

Event ID 26: BranchCache saved a cache file to disk.

#
Channel
Operational
Level
Informational
Opcode
Savinglocalcache.

Fields #

NameDescription
SavePersistedCacheSucceededEvent.Timestamp SYSTEMTIME
Timestamp SYSTEMTIME

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BranchCache",
    "guid": "7eafcf79-06a7-460b-8a55-bd0a0c9248aa",
    "event_source_name": "",
    "event_id": 26,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 17,
    "keywords": 9223372036854775808,
    "time_created": "2026-07-19T17:13:15.8990786+00:00",
    "event_record_id": 72,
    "correlation": {
      "ActivityID": "",
      "RelatedActivityID": ""
    },
    "execution": {
      "process_id": 5200,
      "thread_id": 7620
    },
    "channel": "Microsoft-Windows-BranchCache/Operational",
    "computer": "JD-WIN11-22H2-1.ludus.domain",
    "security": {
      "user_id": "S-1-5-20"
    }
  },
  "user_data": {
    "SavePersistedCacheSucceededEvent": {
      "Timestamp": "1601-01-01T00:00:00.0000000Z"
    }
  },
  "message": "BranchCache saved a cache file to disk."
}

Event ID 27: The BranchCache service stopped and was unable to save the cache file to disk.

#
Channel
Operational
Opcode
Savinglocalcache.

Message #

The BranchCache service stopped and was unable to save the cache file to disk.

Error: %1 %2

Fields #

NameDescription
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 28: The BranchCache service is stopping.

#
Channel
Operational
Level
Informational
Opcode
Info

Example Event #

{
  "system": {
    "provider": "Microsoft-Windows-BranchCache",
    "guid": "{7EAFCF79-06A7-460B-8A55-BD0A0C9248AA}",
    "event_source_name": "",
    "event_id": 28,
    "version": 0,
    "level": 4,
    "task": 0,
    "opcode": 0,
    "keywords": -9223372036854775808,
    "time_created": "2026-05-30T04:15:21.9806347+00:00",
    "event_record_id": 3,
    "correlation": {},
    "execution": {
      "process_id": 9124,
      "thread_id": 5752
    },
    "channel": "Microsoft-Windows-BranchCache/Operational",
    "computer": "JD-WIN11-22H2-1.ludus.domain",
    "security": {
      "user_id": "S-1-5-20"
    }
  },
  "event_data": {},
  "message": "The BranchCache service is stopping."
}

Event ID 29: An SSL certificate is not bound to the port Port on the Hosted Cache server.

#
Channel
Operational
Opcode
Info

Description

An SSL certificate is not bound to the port Port on the Hosted Cache server. As a result, clients cannot add content to the Hosted Cache.

Message #

An SSL certificate is not bound to the port %1 on the Hosted Cache server. As a result, clients cannot add content to the Hosted Cache.

Run the command "netsh http add sslcert" from an elevated command prompt to bind a certificate.

Fields #

NameDescription
Port UInt32

Event ID 30: BranchCache cannot initialize the local cache at location Error.

#
Channel
Operational
Opcode
Info

Message #

BranchCache cannot initialize the local cache at location %1.

Error: %2 %3

Possible reasons are that the local cache directory location is not on an NTFS partition, the path is too long (typically, greater than 190 characters) or does not exist, or the BranchCache service does not have the permissions to write to the directory location. 

Run the command "Set-BCCache" from an elevated PowerShell command prompt.

Fields #

NameDescription
CachePath UnicodeString
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 31: A request message sent to a Hosted Cache client failed.

#
Channel
Operational
Opcode
Downloadingcontent.

Message #

A request message sent to a Hosted Cache client failed.

Error: %6 %7

Fields #

NameDescription
cbSegmentId UInt32
SegmentId Binary
BlockId UInt32
ClientAddress UnicodeString
MessageType UInt32
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 32: The size of the republication cache store at Path is too small.

#
Channel
Operational
Opcode
Info

Description

The size of the republication cache store at Path is too small. The size ConfiguredSize bytes was rounded up to ActualSize bytes.

Message #

The size of the republication cache store at %1 is too small. The size %2 bytes was rounded up to %3 bytes.

Fields #

NameDescription
Path UnicodeString
ConfiguredSize UInt64
ActualSize UInt64

Event ID 33: The size of the publication cache store at Path is too small.

#
Channel
Operational
Opcode
Info

Description

The size of the publication cache store at Path is too small. The size ConfiguredSize bytes was rounded up to ActualSize bytes.

Message #

The size of the publication cache store at %1 is too small. The size %2 bytes was rounded up to %3 bytes.

Fields #

NameDescription
Path UnicodeString
ConfiguredSize UInt64
ActualSize UInt64

Event ID 34: BranchCache failed to register a service connection point.

#
Channel
Operational
Opcode
Info

Fields #

NameDescription
ServerDNSName UnicodeString
SiteName UnicodeString
ExpiryTime SYSTEMTIME
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 35: BranchCache failed to update a service connection point.

#
Channel
Operational
Opcode
Info

Fields #

NameDescription
GUID UnicodeString
ServerDNSName UnicodeString
SiteName UnicodeString
ExpiryTime SYSTEMTIME
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 36: BranchCache failed to delete a service connection point.

#
Channel
Operational
Opcode
Info

Fields #

NameDescription
GUID UnicodeString
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 37: BranchCache failed to discover a service connection point.

#
Channel
Operational
Opcode
Info

Fields #

NameDescription
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 38: BranchCache completed defragmentation of the republication cache store at Error.

#
Channel
Operational
Opcode
Info

Message #

BranchCache completed defragmentation of the republication cache store at %1.

Error: %2 %3

Fields #

NameDescription
Path UnicodeString
ErrorCode UInt32
ErrorMessage UnicodeString

Event ID 39: It is recommended that you consider defragmentation of the republication cache store at Path.

#
Channel
Operational
Opcode
Info

Description

It is recommended that you consider defragmentation of the republication cache store at Path. Defragmentation improves the storage efficiency and performance of BranchCache.

Message #

It is recommended that you consider defragmentation of the republication cache store at %1. Defragmentation improves the storage efficiency and performance of BranchCache.

Configured max size of the cache store: %2 MB

Actual size of data in the cache store: %3 MB

Fields #

NameDescription
Path UnicodeString
ConfiguredSize UInt64
ActualSize UInt64

Event ID 40: Client request was dropped because allowable simultaneous uploads limit was reached.

#
Channel
Operational
Opcode
Info

Message #

Client request was dropped because allowable simultaneous uploads limit was reached.



Remote client address: %1

Current Uploads: %2

Maximum Simultaneous Uploads: %3

Fields #

NameDescription
HCClientAddress UnicodeString
CurrentUploads UInt32
MaxUploads UInt32

Event ID 41: BranchCache cannot start because another application or service is listening on TCP port ListenPort (HTTP).

#
Channel
Operational
Opcode
Info

Description

BranchCache cannot start because another application or service is listening on TCP port ListenPort (HTTP). BranchCache expects incoming requests for content on this port.

Message #

BranchCache cannot start because another application or service is listening on TCP port %1 (HTTP).  BranchCache expects incoming requests for content on this port.

Fields #

NameDescription
ListenPort UInt16

Provenance

ETW provider GUID 7eafcf79-06a7-460b-8a55-bd0a0c9248aa

Defined in peerdistsvc.dll, which carries the event manifest.

  • Win11-26200.6584, schema read from the registered manifest, binary version 10.0.26100.1, captured 2026-06-02 — Manifest XML pack, 2.0 MB