Error 1921: Service 'Intuit Update Service' (IntuitUpdateService) could not be stopped. Verify that you have sufficient privileges to stop system services when attempting to update TurboTax.
This can be caused by background processes that slow your computer down or a defect in the Microsoft .NET files on your system.
Close all programs (including TurboTax), restart your computer, reopen TurboTax, and try updating again.
If that didn't work, close TurboTax and try this:
- In Control Panel, open Administrative Tools and select Services.
- Right-click Intuit Update Service and choose Stop.
- Reopen TurboTax and try updating again.
If you're still getting this error: