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Powershell ActiveDirectory Rename SamAcctName

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Last Modified: 2014-11-17
Hello!

I work on a powershell script for my Active Directory.
My mission is simple: Search every samaccountname contains uppercase and export it to a CSV and then rename the samaccountname in lowercase.

And it work with that code for extract samaccountname in uppercase :  
Get-ADUser -filter * -Searchbase 'OU=users,DC=contoso,DC=com' | ? {$_.sAMAccountname -cmatch'^[a-z A-Z .]+$'}  | Select Name | Export-csv -path C:\Users\me\username.csv -NoTypeInformation

Why "-cmatch'^[a-z A-Z .]+$'"? Cause all of my samaccountname are written like that: x.XXxxx .

Next step, i try to rename in lowercase all the samaccountname in the list of username.csv contained in Active DIrectory.
And i'm blocked with that code :
Import-Csv C:\Users\me\username.csv | foreach{Set-ADUser -identity $_-SamAccountName  $_.sAMAccountName.tolower()}
.
It doesn't work.

Can you help me? Im a newbie.

The hardest point is after executing that script in powershell,  i want to see the result in the AD.
For example: There is an oldSamAccountName: J.smiTH , after executing the script, im able to see in AD (not in the powershell console) the new Account name: j.smith in Properties->Account. Is it possible?

Thanks in advance.
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Commented:
Import-Csv C:\Users\me\username.csv | foreach{Set-ADUser -identity $_-SamAccountName  $_.sAMAccountName.tolower()}

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You have a - instead of a . listed in this code should be.

Import-Csv C:\Users\me\username.csv | foreach{Set-ADUser -identity $_.SamAccountName  $_.sAMAccountName.tolower()}

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Author

Commented:
No, always the error :
Set-ADUser : Impossible de trouver un paramètre positionnel acceptant l'argumen
t « me ».
Au niveau de ligne : 1 Caractère : 74
+ Import-Csv C:\Users\me\username.csv | foreach{Set-ADUser <<<
<  -identity $_.SamAccountName  $_.sAMAccountName.tolower()}
    + CategoryInfo          : InvalidArgument: (:) [Set-ADUser], ParameterBind
   ingException
    + FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.ActiveDire
   ctory.Management.Commands.SetADUser

Set-ADUser : Impossible de trouver un paramètre positionnel acceptant l'argumen
t « t.desk ».
Au niveau de ligne : 1 Caractère : 74
+ Import-Csv C:\Users\me\username.csv | foreach{Set-ADUser <<<
<  -identity $_.SamAccountName  $_.sAMAccountName.tolower()}
    + CategoryInfo          : InvalidArgument: (:) [Set-ADUser], ParameterBind
   ingException
    + FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.ActiveDire
   ctory.Management.Commands.SetADUser

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In english: A positional parameter cannot be found that accepts argument "me".

I want to be more precise: I want import the samaccountname contained in the csv file, in powershell and for EACH name, apply the function Lowercase to the SamAccountName. And i want to see the result in the AD console when i right click-Properties-Account on the user.
Here my list in the CSV :
"sAMaccountname"
"t.DESK2"
"t.Desk"

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Commented:
First get rid of the " in your CSV file. I have done imports many times and never used quotes in my csv file.

Try this

Import-Csv C:\Users\me\username.csv | foreach {
$samid= $_.samaccountname
$samid=$samid.tolower()
Set-ADUser -identity $_.samaccoutname -samaccoutname $samid
}

Author

Commented:
I tried, but i have this error now :
Set-ADUser : Impossible de valider l'argument sur le paramètre « Identity ». L'
argument est null. Indiquez un argument non-null et réessayez.
Au niveau de C:\Users\me\dc.ps1 : 4 Caractère : 21
+ Set-ADUser -identity <<<<  $_.samaccoutname -samaccoutname $samid
    + CategoryInfo          : InvalidData: (:) [Set-ADUser], ParameterBindingV
   alidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.Activ
   eDirectory.Management.Commands.SetADUser

Set-ADUser : Impossible de valider l'argument sur le paramètre « Identity ». L'
argument est null. Indiquez un argument non-null et réessayez.
Au niveau de C:\Users\me\dc.ps1 : 4 Caractère : 21
+ Set-ADUser -identity <<<<  $_.samaccoutname -samaccoutname $samid
    + CategoryInfo          : InvalidData: (:) [Set-ADUser], ParameterBindingV
   alidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.Activ
   eDirectory.Management.Commands.SetADUser

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Translation : impossible to validate an argument on a parameter: identity.
Mhh now i have a doubt about the command: Set-ADUser -identity $_.samaccoutname -samaccoutname $samid.


PS: if i have the " in my csv it's because i opened it with the text editor. Or not? (on my server i can't read csv for the moment.)
Joshua GrantomSystems Administrator
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Top Expert 2014

Commented:
samaccoutname should be samaccountname. It is misspelled.

Import-Csv C:\Users\me\username.csv | foreach {
$samid = $($_.samaccountname).tolower()
Set-ADUser -identity $_.samaccountname -samaccountname $samid
}

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Commented:
Good catch. Sorry about that.
Joshua GrantomSystems Administrator
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Top Expert 2014

Commented:
It happens to the best of us!

Author

Commented:
OK really thank you, it's working... Or not i have not the result i looking for. With screenshot;  screenshotAs you can see the SAMACCOUNTNAME is in lowercase as i asked =).
But in AD: screenshot
Why it's always t-DESK?

Use another commande like Rename instead "-samaccountname"?

Thank you a lot btw now i understand few more things in powershell.
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Commented:
How many DCs do you have? The info could be changed and may need time to replicate if you have multiple DCs.
Joshua GrantomSystems Administrator
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Top Expert 2014

Commented:
Joseph has a point. Depending on your replication schedule it could take a bit.

Author

Commented:
Only two DC. Are you sure this command change the parameter in AD? Cause i always suceed today to made the change in powershell and i got the same problem.
The replication took only 5-10 minutes. I can wait.
Joshua GrantomSystems Administrator
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Top Expert 2014

Commented:
it may be because of the UserPrincipalName as well

Author

Commented:
So i need to change the UPN too? What's the command -UserprincipalName?
Joshua GrantomSystems Administrator
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Top Expert 2014

Commented:
-UserPrincipalName

Import-Csv C:\Users\me\username.csv | foreach {
$samid = $($_.samaccountname).tolower()
Set-ADUser -identity $_.samaccountname -samaccountname $samid -UserPrincipalName "$($samid)@contoso.com"
}

Author

Commented:
Ok ,i did it but no change.
As you can see, when i rename on the AD the user t.desk i have this windows. And this is ALWAYS in t.DESK.regc.jpg

Author

Commented:
Is this another command like SET-ADOBJECT?
Systems Administrator
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Top Expert 2014
Commented:
This one is on us!
(Get your first solution completely free - no credit card required)
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Author

Commented:
Wow nice, it work!! But, didn't understand your code yet. I will work on it. Just why $samid +"1" ? And the last line, what did it change in the script?
Joshua GrantomSystems Administrator
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Top Expert 2014

Commented:
All it does is change the name to
t.desk1 then changes it back to t.desk.

It seems ADUC doesn't update if the case changes unless you completely rename it first

Author

Commented:
Ah i understand now, strange.
Thank you!
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