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What is QBDBMgrN not running on this computer error and how to debug it?


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A user can face QBDBMgrN not running on this computer error while turning on the multi-user mode in QuickBooks Desktop. Usually, it takes place when the Firewall on the server computer blocks QuickBooks Desktop from connecting to the internet. Below, we have explained the steps that you can follow to rectify this error:

1. On your keyboard, press the Windows icon key to select the Start menu.
2. Choose the All Programs option.
3. From the list of options, select Windows Firewall.
4. Choose Advanced Settings from the left-side pane.
5. Right-click Inbound Rules and then choose the New Rule option.
6. Select the Port option and then choose the Next option.
7. Ensure the TCP option is selected.
8. In the Specific local ports column, type the particular ports required for your QuickBooks year version.
9. Choose the Next button.
10. Click on the Allow the Connection option and then choose the Next button.
11. If prompted, make certain all profiles are check-marked. Select the Next button.
12. Create a new rule and give it a title like “QBPorts(year).”
13. Choose the Finish button.
14. Follow the above same steps to create outbound rules now.


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