QuickBooks Payroll Error 15106 occurs when you download QB Desktop updates. This is followed by a message: The update program cannot be opened. The update program is damaged. Error 15106 generally occurs due to the detection of a spy sweeper in the antivirus program.
Follow the steps given to fix this error.
Log in as an Admin.
Look for the spysweeper.exe file and end its process.
Turn off the UAC.
By executing the mentioned steps, you can fix this error quickly. If it fails to fix the issue, you can call our QB experts for on-call support at our (855)-526-5749.