SharePoint 2013 Distributed Cache is reporting a server as DOWN or UNKNOWN after the server was removed from sharepoint
The following command will confirm this issue
Use-cachecluster
get-cachehost
example output:
HostName : CachePort Service Name Service Status Version Info
-------------------------- ------------ -------------- ------------
WEB05.DOMAIN.LOCAL:22233 AppFabricCachingService UNKNOWN 0 [0,0][0,0]
WEB06.DOMAIN.LOCAL:22233 AppFabricCachingService UP 3 [3,3][1,3]
WEB07.DOMAIN.LOCAL:22233 AppFabricCachingService UP 3 [3,3][1,3]
To remove the orphan
run the following powershell command (using SharePoint 2013 powershell as administrators)
Unregister-CacheHost -HostName "
Unregister-CacheHost -HostName "WEB05.DOMAIN.LOCAL" -provider "SPDistributedCacheClusterProvider" -ConnectionString "Data Source=SHAREPOINTSQL;Initial Catalog=ConfigDB;Integrated Security=True;Enlist=False"
Connection string details can be found here: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppFabric\V1.0\Configuration
