Recently, while trying to update the QuickBooks Desktop, I got stuck with QuickBooks Error 1321. Because of this error, I wasn’t able to install the latest updates of the QuickBooks application. However, to fix the error, I searched on different websites to find the best troubleshooting steps but failed to do the same. After searching on several websites, I came across a file named 'Error 1321 in QuickBooks Desktop'. You can also click on this article to get the best possible solutions to fix the error.