The server was unable to process the request due to an internal error
I ran into the below error message when running the Get-ADPrincipalGroupMembership
account Powershell commands for certain user accounts in AD.
I searched the Internet thoroughly and couldn't find much at all so I kept digging, turned on verbose, tracing, testing, comparing, and so on.
I finally found the cause and a solution (in my case) so I wanted to post this here as both a question and an answer since I couldn't find much elsewhere during my troubleshooting process.
This may help someone get a quick solution and save them some headaches if they're working on something urgent or critical.
Full Powershell Error Message
PS C:\Users\User> Get-ADPrincipalGroupMembership <AccountName>
Get-ADPrincipalGroupMembership : The server was unable to process the request due to an
internal error. For more information about the error, either turn on
IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the
<serviceDebug> configuration behavior) on the server in order to send the exception
information back to the client, or turn on tracing as per the Microsoft .NET Framework 3.0
SDK documentation and inspect the server trace logs.
At line:1 char:1
+ Get-ADPrincipalGroupMembership <AccountName>
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (<AccountName>:ADPrincipal) [Get-ADPrincipalGr
oupMembership], ADException
+ FullyQualifiedErrorId : The server was unable to process the request due to an inter
nal error. For more information about the error, either turn on IncludeExceptionDetai
lInFaults (either from ServiceBehaviorAttribute or from the <serviceDebug> configurati
on behavior) on the server in order to send the exception information back to the clie
nt, or turn on tracing as per the Microsoft .NET Framework 3.0 SDK documentation and i
nspect the server trace logs.,Microsoft.ActiveDirectory.Management.Commands.GetADPrinc
ipalGroupMembership
THE CAUSES (in my case)
/
] forward slash character in the name of the OU .Group Name
that also contained a [/
] forward slash character.THE SOLUTION (in my case)
I removed all the forward slash characters from the OU and group names and everything worked as expected afterwards.