QuickBooks Error 12002 is an error code that occurs when there is a problem with the internet connectivity or settings on your computer while using QuickBooks accounting software. This error is typically encountered when QuickBooks attempts to access the internet to communicate with the server but fails to establish a connection.
Methods to Resolve QuickBooks Error 12002
Method 1: Configure firewall and security settings
Method 2: Verify your internet browser settings
Method 3: Update QuickBooks to the latest release
Method 4: Review SSL/TLS settings
Method 5: Perform a clean install of QuickBooks