When the QuickBooks error 15215 encounters, the users get an error message that says, “Error 15215: Unable to verify digital signature.” The error usually appears when a user tries to download the QuickBooks payroll update. The error occurs because of a conflict with another program running in the background that requires a lot of bandwidth, preventing QuickBooks from connecting to the server computer. This blog will give you in-depth information on QuickBooks payroll update error 15215, its causes, and solutions, so read carefully until the end.
If you are fed up with QuickBooks error 15215, get troubleshooting assistance from the certified QuickBooks expert’s team by calling us on our helpline number +1-800-417-5147
Primary reasons behind QuickBooks update error 15215
Following are the factors responsible for the error:
Some other applications running in the background interfere with QuickBooks while downloading the update.
You are not running QuickBooks as an administrator.
The Windows firewall and security program is blocking QuickBooks Desktop Payroll from connecting to the update server. 
Follow the complete blog for quick troubleshooting techniques to resolve the error.
Solutions to Solve QuickBooks Desktop error 15215
With the help of the following troubleshooting solutions, you can start QuickBooks as an administrator, use TLS 1.0 security protocol, and restart Windows in the selective startup:
Solution 1. Start QuickBooks as the Windows Administrator
By running QuickBooks as an administrator, you are allowing QuickBooks to take priority over other programs running on the workstation and to use all required resources to run smoothly:
Close the QuickBooks Desktop window.
Right-click the QuickBooks Desktop icon and choose the Run as administrator option.
When “Do you want to allow this program to make changes to your computer?” message prompts, click Yes.
If the above-given solution didn’t work, try the next solution.
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Solution 2. Enable TLS 1.0 security protocol in Internet Explorer
Close the QuickBooks window and open the Internet Explorer.
Select the Tools menu and then Internet Options.
Choose the Advanced tab and under the Settings section, locate and select Use TLS 1.0.
Unmark the Use TLS 1.1 and Use TLS 1.2 options and click OK.
Close the Internet Explorer window and restart your workstation.
Open QuickBooks and try to download the update.
If the error recurs, proceed to the next solution.
Solution 3. Start Windows in Selective Startup mode
Close the QuickBooks Desktop application and open the Run dialog box by pressing the Windows and R keys on your keyboard.
Write msconfig in the Run box and click OK.
When the System Configuration Utility window opens, mark the Selective Startup option.
Uncheck the Load Startup Items checkbox and click OK to save the changes.
Restart your workstation, open QuickBooks, and download the latest tax table.
After downloading the update successfully, start Windows in Selective Startup.
We have tried our best to help you resolve QuickBooks error 15215. If you are still facing any difficulty resolving the error, get in touch with the QuickBooks technical support team by dialing our toll-free number +1-800-417-5147.
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