SOLVED: Remove ActiveSyncDevice Fails with ‘Cannot Be Found’

This is an easy one if you pay attention to the details in the error:

Summary: 1 item(s). 0 succeeded, 1 failed. Elapsed time: 00:00:00

Dan Tican\IEM/1026121420 CFNetwork/609 Darwin/13.0.0 Failed

Error: The ActiveSyncDevice MY DOMAIN/Ian – Users/Dan/ExchangeActiveSyncDevices/iPhone§78D33F828A7549BF95E4FE cannot be found. Click here for help…

Exchange Management Shell command attempted: Remove-ActiveSyncDevice -Identity MY DOMAIN/Ian – Users/Dan/ExchangeActiveSyncDevices/iPhone§78D33F828A7549BF95E4FEFE

Elapsed Time: 00:00:00ActiveSyncDevice-cannot-be-found-manage-mobile-phone

The key is the path to the Organizational Unit (OU) in Active Directory.  The user in question is now in:

My Domain/Canada/Calgary/Employees/Dan

but at the time the user added their iPhone they were in:

My Domain/Ian – Users

Soooo, the solution is just to:

  1. create the old OU path in Active Directory
  2. move the user into that OU
  3. go back to the Exchange Management Console and try it again
  4. Go for beer



  1. Avatar
    mary January 3, 2014 at 8:22 am

    Hi Ian. Looks like you are the official helper for the Samsung Galaxy III. Can you tell me how to empty my “full” mailbox. I have tried every which way and it still says that my mailbox is full when someone tries to leave a message. Thanks kindly.

    • Ian Matthews
      Ian Matthews January 11, 2014 at 7:31 pm

      Hi M; 🙂
      I do not understand the issue. Are you saying that your S3 says your mailbox is full? If so that is odd, all of the S3 accounts I have only keep a few weeks of mail on the S3 and older messages just fall off so I am never ‘full’.

      That being said I do not have any POP3 accounts so I suppose it is possible to fill your storage. If that is the case and you want to delete it all, I found a DELETE ALL option in the email menu:

      Samsung Galaxy S3 Delete All Mail

Questions or Comments?