Facing network errors like H202 or H505? Chances are Windows Firewall is Blocking QuickBooks. Here’s what to do:

1. 
   

   Open Windows Defender Firewall

   
   


2. 
   

   Add inbound and outbound rules for QB ports

   
   


3. 
   

   Whitelist QuickBooks executables like QBW32.exe

   
   

If you're unsure how, call +1-866-500-0076 for step-by-step guidance.