Event ID 78 — Cache Integrity

  • Article

Applies To: Windows Server 2008 R2

In order for BITS to download content from a peer server, data in the peer cache on that server must not be corrupted. If data in the peer cache is corrupted and BITS encounters an error while reading the peer cache, BITS will attempt to delete the cache, and then recreate the cache to handle future requests. If this attempt is not successful, the cache might have to be manually cleared.

Event Details

Product: Windows Operating System
ID: 78
Source: Microsoft-Windows-Bits-Client
Version: 6.1
Symbolic Name: EVT_PEER_CACHE_CORRUPT
Message: BITS has encountered %1 error while reading peer cache information. BITS will now attempt to delete and recreate the peer cache.

Resolve

Clear the cache, and then stop and restart the BITS service

To resolve this issue, clear the cache and then stop and restart the BITS service.

To perform this procedure, you must have membership in the local Administrators group, or you must have been delegated the appropriate authority.

To clear the cache, and then stop and restart the BITS service:

  1. Open an elevated command prompt. To open an elevated command prompt, click Start, right-click Command Prompt, and then click Run as Administrator.
  2. Type bitsadmin /cache /clear, and then press ENTER.
  3. To stop the BITS service, type sc stop bits, and then press ENTER.
  4. To restart the BITS service, type sc start bits, and then press ENTER.

Verify

To view items in the peer cache:

  • From a command prompt running as an administrator, type:

    bitsadmin /CACHE /LIST

  • Additional commands are available to manage the peer cache. To view these commands, type:

    bitsadmin /CACHE

Cache Integrity

BITS Infrastructure