As the first step to this solution is to turn on the Network Discovery on your server computer and any workstations that are facing QuickBooks Desktop Error H202, follow the following steps for the same:
Open the Windows Start menu on your server and on the error facing workstations.
Type “Network” into the search and then open the Network and Sharing Center.
Select Change Advanced Sharing settings.
Turn on Network Discovery and File and Printer Sharing options.
Now, you need to get the server name from your server.
From the start menu on your server computer, type “Run” in the search bar
Type “CMD” into the Run window and hit enter.
Type “ipconfig/all” into the CMD window and press Enter.
Find the text Host Name on the screen and to its right is where the server name is written.
Note down this Host Name.
Open Run from the Windows Start menu.
Type “CMD” into the Run window.
Then, type “ping_[your server name],” and hit Enter. Type in the server name without the brackets.
Repeat the above steps on every workstation that is having the QuickBooks Error H202
If this doesn't solve your problem you can contact your QB hosting solution
provider. Also, this method works for QuickBooks for Mac