Troubleshooting Multi-User Mode
Use these instructions if multiple users are unable to access QuickBooks at the same time.
Double-check Company file is in multi-user mode on all open versions. (File > Multi-User Mode (or Single-User Mode if already enabled))
If multi-user mode doesn't work, follow the steps below:
Close Company File on all computers.
From the file server > Run QuickBooks Database Server Manager.
Re-open Company File and go to File > Multi-user Mode.
Attempt re-opening company file on other computers at the same time.
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