batcmd.com Windows 10 Services

User Data Access - Windows 10 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 exists in Windows 10 only.

Startup Type

Windows 10 edition 1507 1511 1607 1703
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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:
  • SeImpersonatePrivilege
  • SeCreateGlobalPrivilege

Default Behavior

If User Data Access fails to load or initialize, Windows 10 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 10 edition and release, and then click on the Download button below.

2. Save the RestoreUserDataAccessWindows10.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. 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 10 installation media.