If you experience issues with timer jobs failing to complete and receiving errors while trying to run psconfig, Clear configuration cache SharePoint on the farm is a possible method for resolving the issue.
The config cache is where we cache configuration information (stored in the config database) on each server in the farm.
Caching the data on each server prevents us from having to make SQL calls to pull this information from the configuration database.Sometime this data can become corrupted and needs to be cleared out and rebuilt.
If you only see a single server having issues,only clear the config cache on that server,you do not need to clear the cache on the entire farm. To do a single server, follow the steps below on just the problem server.
To clear the config cache on the farm, follow these steps:
1. Stop the OWSTIMER service on ALL of the servers in the farm.
2. On the Index server, navigate to:
\ProgramData\Microsoft\SharePoint\Config\GUID and delete all the XML files from the directory.
3. Delete all the XML file in the directory. NOTE: ONLY THE XML FILES, NOT THE .INI FILE.
4. Open the cache.ini with Notepad and reset the number to 1. Save and close the file.
5. Start the OWSTIMER service on the Index server and wait for XML files to begin to reappear in the directory.
6. After you see XML files appearing on the Index server, repeat steps 2, 3 & 4 on each query server, waiting for XML files to appear before moving to subsequent servers.
7. After all of the query servers have all been cleared and new .xml files have been generated, proceed to the WFE and Application servers in the farm, following steps 2, 3, 4 and 5 for each remaining server.
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