If QuickBooks Desktop runs slow after a new update, first try restarting your computer to clear any temporary issues. Next, ensure your QuickBooks is up-to-date with the latest patches by going to Help > Update QuickBooks Desktop. Perform a Verify and Rebuild Data operation to fix any data integrity issues: go to File > Utilities > Verify Data and then Rebuild Data. Also, check your computer's performance and optimize it by running disk cleanup and checking for background processes that might be affecting speed.
