Reply To: QuickBooks Error Code H505: Fix It, Resolve It

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QuickBooks Error H505 occurs when you try to open a company file which is not situated on your computer. It can also appear when QuickBooks Company File needs some additional configuration.

Main Causes of QuickBooks Error Code H505
QuickBooks Error H505 happens if there is any issue related to Multi-user hosting set up. Hence the error occurs when the user tries to access the company file which is on another computer which lacked proper QuickBooks Installation and set-up. This leads to QuickBooks Error code H505.

Damaged or wrong .ND file restricts QuickBooks Desktop from opening files over the network
QuickBooks Services such as QuickBooksDBXX or QBFCMonitor are not activated on your PC. These services prevent error H505 and other issues as well.
Incorrect Settings of Hosting configuration block the communication of QuickBooks with the corporate file.

Solutions to fix QuickBooks Error H505
Below given are some recommended solutions that can resolve error H505 easily.

Solution 1: Make a new Company File Folder
First, generate a ‘Replacement folder’ on the hosting computer. Now share the original folder and Windows access permissions to share the company files
If you do not have access to the digital computer then, Contact a skilled IT professional
In the new folder, Copy .qbw file in multi-user mode again
You can now open the Company file.
Solution 2: Open Network Ports that QuickBooks uses to transmit knowledge
Configure Firewall settings
Go to the Windows Firewall Settings, and right-click on Windows Option to click on the instrument panel. Now type ‘Firewall’ in the search bar, and press Enter. Click Windows Firewall and press Advanced Settings option.
Go to the left and right-click ‘Outbound Rules,’ and select ‘New Rule.’
Press on Ports and press Next
Click TCP, and in the specific local ports enter the following ports:
For QuickBooks Desktop 2018- 8019,56728,55378-55382
QuickBooks Desktop 2017-8019,56727,55373-55377
For QuickBooks Desktop 2016-8019,56726,55368-55372
For QuickBooks Desktop 2015-8019,56725,55363-55367
Click Next and select ‘Allow the Connection’ option
Click Next to type-in name in the name field, and press Finish
Repeat steps 1-5 for the inbound rules
Now go to the multi-user mode again and open QuickBooks

I hope both these methods will be helpful!
Mark Wilson