Until recently I had code signing set up and working in our domain but recently I've encountered the infamous UnknownError in every attempt to sign a ps1 script despite my confirming without a doubt that I've got the right encoding type for the file.
GPOs distributing my cert as a trusted publisher appear to still be working. Cert stores on local machines look correct.
The only clue I can find in any Event Viewer are Powershell Event ID300s detailing :
Provider Health: Cannot find the certificate store because the specified X509 store location * is not valid.. Details: ProviderName=Certificate ExceptionClass=ProviderInvocationException ErrorCategory=ObjectNotFound ErrorId=CertProviderItemNotFound ErrorMessage=Cannot find the certificate store because the specified X509 store location * is not valid. Severity=Warning SequenceNumber=11 HostName=ConsoleHost HostVersion=2.0 HostId=c6ff7222-9dd9-40e5-bbbe-39bc99932710 EngineVersion=2.0 RunspaceId=4e5b147b-cf23-47c3-b2f8-48e01040bcb4 PipelineId=15 CommandName= CommandType= ScriptName= CommandPath= CommandLine=
What else could be causing this issue?