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User profiles may fail to load after you install the Windows 8.1, or Windows Server 2012 R2 April 2014 update

Consider the following:
  • You have Windows 8.1 computers in your domain.
  • You configure users to use Roaming User Profiles when they logon to the Windows 8.1 computers.
  • You install the Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2 update that is dated April 2014 on the Windows 8.1 computers.

In this scenario, after the update is installed, any user who tries to log on for the first time to any of the Windows 8.1 computers cannot do so. Additionally, the user will receive the following error:

The User Profile Service failed the logon. User profile cannot be loaded.

In addition, you may notice the following errors in the event log:

Log Name: Application
Source:        Microsoft-Windows-User Profiles General
Date:          09/06/2014 10:01:10
Event ID:      1509
Task Category: None
Level:         Warning
User:          Contoso\User1
Windows cannot copy file \\?\UNC\\Users\Profiles\User1.V4\AppData\Roaming\ApplicationName\Program Settings\0000.ex to location \\?\C:\Users\User1\AppData\Roaming\ApplicationName\Program Settings\0000.ex. This error may be caused by network problems or insufficient security rights. 

DETAIL - The process cannot access the file because it is being used by another process.

Log Name:      Application
Source:        Microsoft-Windows-User Profiles Service
Date:          09/06/2014 10:02:33
Event ID:      1500
Task Category: None
Level:         Error
User:          Contoso\User1
Windows cannot log you on because your profile cannot be loaded. Check that you are connected to the network, and that your network is functioning correctly. 

DETAIL - Unspecified error

This issue may occur if you have Microsoft Application Virtualization 5.0 Service Pack 2 installed.
Install the hotfix detailed here on all computers where you are facing the issue.

Hotfix Package 5 for Microsoft ApplicationVirtualization 5.0Service Pack 2

Article ID: 2985344 - Last Review: 07/21/2014 06:29:00 - Revision: 2.0

Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Pro, Windows Server 2012 R2 Datacenter, Windows Server 2012 R2 Essentials, Windows Server 2012 R2 Standard, Windows Server 2012 R2 Foundation, Windows RT 8.1

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