There might be several instances when the users might come across different errors due to unstable Internet Explorer Settings. And one such error is QuickBooks Maintenance Release Error 15215. Therefore, to fix the error, you must ensure that you have selected the checkbox of Use TLS 1.0 and unmark Use TLS 1.1 and Use TLS 1.2. If the TLS is not set as TLS 1.0 then you can do it manually by following the steps below:
Open the Internet Explorer and then click the Gear icon followed by the Internet Options.
Select the Advanced tab and then scroll down to the Settings menu and check that you have marked the checkbox of Use TLS 1.1 and unmarked Use TLS 1.1. Later on click Ok to close the window.
Then, close the Internet Explorer and reboot your computer.
After this, restart your computer and open QuickBooks Desktop again and then try to download the updates again.
Hopefully, we assure you that the steps listed above will help you to configure the Internet Explorer Settings. And thus it helps you in preventing QuickBooks Maintenance Release Error 15215. For any further assistance, feel free to contact our experts by dialing the helpline number +1(855)-856-0053.