Error 1921: Service 'Intuit Update Service' (IntuitUpdateService) could not be stopped...

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 error can be caused by background processes that slow down your computer or a defect in the Microsoft .NET files on your system.

Solution

Close all programs (including TurboTax), restart your computer, reopen TurboTax, and try updating again.

If that doesn't work, close TurboTax and try this:

1. In Control Panel, open Administrative Tools and select Services.
2. Right-click Intuit Update Service and choose Stop.
3. Reopen TurboTax and try updating again.

If you're still getting the error:

1. Go to the Windows Update website and check for updates.
2. Download and install the Microsoft .NET Framework 3.5 Service Pack 1 and .Net Framework 3.5 Family Update (KB951847).
3. Restart your computer if prompted to do so.
4. Reopen TurboTax and try updating again.