User Data Access - Windows 11 Service
Provides apps access to 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 |
|---|---|---|---|---|
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
| 23H2 | Manual | Manual | Manual | Manual |
| 24H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | User Data Access |
| Service name: | UserDataSvc |
| Type: | user share process template |
| Path: | %WinDir%\system32\svchost.exe -k UnistackSvcGroup |
| File: | %WinDir%\System32\userdataservice.dll |
| Error control: | ignore |
| Object: | LocalSystem |
| Privileges: |
|
Default Behavior
If User Data Access fails to load or initialize, Windows 11 start up proceeds. No warning is displayed, but the error is recorded into the Event Log.
Dependencies
User Data Access is unable to start, if the User Data Storage service is stopped or disabled.
Restore Default Startup Type for User Data Access
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreUserDataAccessWindows11.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 userdataservice.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.