https://washingtonstate.forums.rivals.com/threads/how-to-fix-800-27...
If you are a QuickBooks user, encountering the "QBDBMGRN Not Running on This Computer" error can be a significant disruption to your business operations. This error typically occurs when the QuickBooks Database Server Manager, abbreviated as QBDBMGRN, fails to run correctly. This service is crucial for multi-user setups, enabling multiple users to access the QuickBooks company file simultaneously.