QuickBooks error code 1321 generally occurs when you are unable to access any certain file because of not having permission to run the file related to the program. If you are also going through the same situation, then we recommend you to update the privileges for the QuickBooks files. In this way, you can easily get rid of the error 1321 QuickBooks. If for any cause, you are unable to troubleshoot the error, go through some more solutions for the same issue. Causes behind the occurrence of QuickBooks Error 1321 The following are the possible causes for the error 1321 QuickBooks. If you are also experiencing one of the below-mentioned reasons, resolve the issue instantly. 1) You will be unable to install the updates because of getting blocked by firewall settings. 2) Due to the damaged company files, QuickBooks error code 1321 may appear. 3) When a copying file process taking more time than the updating process. Solutions to troubleshoot QuickBooks Error 1321 Below-written are some quick solutions that will definitely guide you in the right direction to get rid of QuickBooks error code 1321. Solution 1: Try to install the recent updates again. Solution 2: You are required to update user Privileges. Solution 3: Use QuickBooks Install Diagnostic Tool. Solution 4: Correct Windows permissions. Conclusion After going through the above-mentioned solutions, you can fix QuickBooks Error 1321. In case, you are still dealing with the same, then quickly get in touch with our technicians by dialing our toll-free QuickBooks Premier Support Phone Number(+1-888-660-0607).