Windows 11 Services

User Data Storage - Windows 11 Service

Handles storage of structured user data, including contact info, calendars, messages, and other content. If you stop or disable this service, apps that use this data might not work correctly.

This service also exists in Windows 10.

Startup Type

Windows 11 version Home Pro Education Enterprise
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Default Properties

Display name:User Data Storage
Service name:UnistoreSvc
Type:user share process template
Path:%WinDir%\System32\svchost.exe -k UnistackSvcGroup
Error control:ignore
  • SeImpersonatePrivilege
  • SeCreateGlobalPrivilege

Default Behavior

If User Data Storage fails to load or initialize, Windows 11 start up proceeds. No warning is displayed, but the error is recorded into the Event Log.


If User Data Storage is stopped, the following services cannot start:

Restore Default Startup Type for User Data Storage

Automated Restore

1. Select your Windows 11 edition and release, and then click on the Download button below.

2. Save the RestoreUserDataStorageWindows11.bat file to any folder on a local drive such as SSD or a hard disk.

3. Right-click the downloaded batch file and select Properties.

4. Check the Unblock checkbox and click OK.

5. Right-click the batch file again and select Run as administrator.

6. Restart the computer to save changes.

Note. Make sure that the unistore.dll file exists in the %WinDir%\System32 folder. If this file is missing you can try to restore it from your Windows 11 installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.