We are having issues with searching on our SharePoint app - is this related to it?


Log Name: Application
Source: Microsoft-SharePoint Products-SharePoint Foundation
Date: 11/01/2022 08:55:00
Event ID: 6398
Task Category: Timer
Level: Critical
Keywords:
User: domain\ADMIN
Computer: SQL1.domain.local
Description:
The Execute method of job definition Microsoft.Office.Server.UserProfiles.LMTRepopulationJob (ID 0ff30af9-d371-414c-a8a3-d83e7615133e) threw an exception. More information is included below.

Unexpected exception in FeedCacheService.IsRepopulationNeeded: Cache cluster is down, restart the cache cluster and Retry.. (Correlation=5da815a0-6ead-5011-b9d2-ed0634c800e6)
Event Xml:



6398
16
1
12
0
0x2000000000000000

557233


Application
SQL1.domain.local



Microsoft.Office.Server.UserProfiles.LMTRepopulationJob
0ff30af9-d371-414c-a8a3-d83e7615133e
Unexpected exception in FeedCacheService.IsRepopulationNeeded: Cache cluster is down, restart the cache cluster and Retry.. (Correlation=5da815a0-6ead-5011-b9d2-ed0634c800e6)

It seems this may be a permissions problem, but when we try and add them, we see:

Grant-CacheAllowedClientAccount : Object reference not set to an instance of an object.
At line:1 char:1
+ Grant-CacheAllowedClientAccount -Account "domain\admin"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Grant-AFCacheAllowedClientAccount], NullReferenceException
+ FullyQualifiedErrorId : System.NullReferenceException,Microsoft.ApplicationServer.Caching.Commands.GrantAFCacheA
llowedClientAccountCommand

Sorry I was being really dumb and running this in the SharePoint powershell instead of the AppFabric one 😣

Just as an aside, this was all changed by a service pack that was run a while back on Windows and when logging into AppFabric PowerShell for the first time since the Search on SharePoint had been broken I saw:

File C:\Program Files\AppFabric 1.1 for Windows
Server\PowershellModules\DistributedCacheAdministration\Microsoft.ApplicationServer.Caching.ManagementPS.format.ps1xml
is published by CN=Microsoft Corporation, OU=MOPR, O=Microsoft Corporation, L=Redmond, S=Washington, C=US and is not
trusted on your system. Only run scripts from trusted publishers.
[V] Never run [D] Do not run [R] Run once [A] Always run [?] Help (default is "D"):

Do you want to run software from this untrusted publisher?
File C:\Program Files\AppFabric 1.1 for Windows
Server\PowershellModules\DistributedCacheAdministration\DistributedCacheAdministration.psm1 is published by
CN=Microsoft Corporation, OU=MOPR, O=Microsoft Corporation, L=Redmond, S=Washington, C=US and is not trusted on your
system. Only run scripts from trusted publishers.
[V] Never run [D] Do not run [R] Run once [A] Always run [?] Help (default is "D"):

Perhaps it is related?

We allowed them to run as they appeared to be Microsoft scripts anyhow.