[ADSI]::Exists throws an exception instead of returning False
adsi, powershell
Solution
Its a bug and Microsoft will not fix it --
http://connect.microsoft.com/VisualStudio/feedback/details/337682/directoryentry-exists-throws-exception-for-non-existent-winnt-object
We are resolving this bug as won't fix. Although the design isn't right... Apps might have been written expecting this - and the change might break those apps. The workaround is to catch the exception - not pretty, agreed, but not enough justification for a fix. The documentation needs to be fixed and I will open a doc workitem for this.
Problem
I'm trying to create a user using the ADSI object if it doesn't already exist. Here are the strange results I'm getting ``` #Check a user that I know exists [ADSI]::Exists("WinNT://localhost/micah,user") #True #Check a group that I know exists [ADSI]::Exists("WinNT://localhost/administrators,group") #True #Check a group that DOESN'T exist [ADSI]::Exists("WinNT://localhost/whoops,group") #False #Check a user that DOESN'T exist (NOT specifying that the obect is a user) [ADSI]::Exists("WinNT://localhost/test") #False (This works fine) #Check a user that DOESN'T exist (specifying that the obect IS a user) [ADSI]::Exists("WinNT://localhost/test,user") #Throws exception "The user name could not be found" ``` The last line makes no sense to me. Why would it throw an exception when I specify that I'm specifically looking for a user, but when I DONT specify that I want a user it works just fine? This seems completely unintuitive to me. What am I missing?