You cannot decrypt data after you encrypt it by using CredLocker in Windows 8.1 or Windows Server 2012 R2

Applies to: Windows Server 2012 R2 DatacenterWindows Server 2012 R2 EssentialsWindows Server 2012 R2 Standard


Consider the following scenario:

  • You enable a Work Folders service on a file server that is running Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2 in a domain.
  • You create credentials in the CredLocker tool to encrypt data on the file server.
  • You change the password of your domain account on a computer, and then you log on to another computer by using the new password in the same domain.
In this scenario, the credentials in the CredLocker tool become corrupted. Therefore, you cannot access the data on the file server.


This issue occurs because the Data Protection API (DPAPI) cannot recover a key that calls MasterKey from a domain controller after a password is changed on a domain-joined computer.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about software update terminology, see the Description of the standard terminology that is used to describe Microsoft software updates.