How to fix QuickBooks code H202 error 
                     How to resolve Quickbooks H202 error code
Here are some symptoms of Quickbooks error code h202
● In multi-user mode, you cannot switch.
● QuickBooks will not open the company file.
● Sometimes your computer may become inactive and therefore not 
respond.
● If the system freezes, you may lose connectivity for a short period of 
time.
● If QuickBooks does not respond appropriately, this will happen.
QuickBooks Error H202 and the easiest solution
1. QuickBooks encourages its users to download and install the QuickBooks 
Connection Diagnostic Tool from their website.
2. On your desktop, save the downloaded file.
3. Then, double-click the tool and ensure that you run it and scan the 
company file.
4. As soon as the tool is run, note the IP address displayed.
5. Check the Open Ports button in the firewall Status section and enable any 
ports you see there.