QuickBooks runs slowly in multi-user mode This is a serious technical issue for the users who are using QuickBooks in multi-user mode and facing it while using it. 1 There is a solution for them, before that the users have to check it out whether the hardware which they are using is compatible with the software or not. 2 If yes then they can resolve the issue through clean up company data tool which can be found in File >> Utilities 3 If this option doesn’t work then the users can turn off the Audit trail feature The users have another option in the form of QuickBooks Tech Support Number where certified experts will assist them in resolving the issues.