User Data Storage (UnistoreSvc) Service Defaults in Windows 11
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.
Default Settings
| Startup type: | Manual |
| Display name: | User Data Storage |
| Service name: | UnistoreSvc |
| Service type: | user share process template |
| Error control: | ignore |
| Object: | LocalSystem |
| Path: | %SystemRoot%\System32\svchost.exe -k UnistackSvcGroup |
| File: | %SystemRoot%\System32\unistore.dll |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UnistoreSvc |
| Privileges: |
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Default Behavior
In Windows 11 it starts only if the user, an application or another service starts it. If User Data Storage fails to load or initialize, Windows 11 is starting up without warnings, however the error details are being logged.
Dependencies
If User Data Storage doesn't work properly, the following services will not start:
Restore Default Startup Configuration of User Data Storage
1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config UnistoreSvc start= demand
3. Close the command window and restart the computer.
The UnistoreSvc service is using the unistore.dll file that is located in the C:\Windows\System32 directory. If the file is removed or corrupted, read this article to restore its original version from Windows 11 installation media.