User Data Storage - Windows 10 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 exists in Windows 10 only.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | Manual | Manual | Manual | Manual |
| 1511 | Manual | Manual | Manual | Manual |
| 1607 | Manual | Manual | Manual | Manual |
| 1703 | Manual | Manual | Manual | Manual |
| 1709 | Manual | Manual | Manual | Manual |
| 1803 | Manual | Manual | Manual | Manual |
| 1809 | Manual | Manual | Manual | Manual |
| 1903 | Manual | Manual | Manual | Manual |
| 1909 | Manual | Manual | Manual | Manual |
| 2004 | Manual | Manual | Manual | Manual |
| 20H2 | Manual | Manual | Manual | Manual |
| 21H1 | Manual | Manual | Manual | Manual |
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | User Data Storage |
| Service name: | UnistoreSvc |
| Type: | user share process template |
| Path: | %WinDir%\System32\svchost.exe -k UnistackSvcGroup |
| File: | %WinDir%\System32\unistore.dll |
| Error control: | ignore |
| Object: | LocalSystem |
| Privileges: |
|
Default Behavior
If User Data Storage fails to load or initialize, Windows 10 start up proceeds. No warning is displayed, but the error is recorded into the Event Log.
Dependencies
If User Data Storage is stopped, the following services cannot start:
Restore Default Startup Type of User Data Storage
Automated Restore
1. Select your Windows 10 edition and release, and then click on the Download button below.
2. Save the RestoreUserDataStorageWindows10.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 unistore.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.