https://www.bloglovin.com/@qbenterprisesupport/what-is-quickbooks-error-h202-how-to-resolve-4329105

You need to change your settings to the multi-user mode to let the computers within the network access the corporate file. As an example, a blunder called QuickBooks error h202 can occur while switching the user access mode to multi-user. This issue can occur when you switch to multi-user mode or try to access a company file located on the multi-user network. The software won’t allow you to perform the task further as error codes will block the interface. This error indicates that your connection to the server computer is being blocked.

What is QuickBooks error H202? This multi-user mode error occurs for several reasons and many users encounter this error when they try to switch from single-user mode to multi-user mode. What are the Causes of QuickBooks Error H202? Simple Methods to Fix QuickBooks Error H202Method 1: Running QuickBooks File Doctor ToolMethod 2: Check whether QuickBooks Services are running or notMethod 3: New QuickBooks Company File FolderMethod 4: Verify hosting and ServicesMethod 5: Network Connectivity testing and calibrationMethod 6: Configure Firewall Settings on the serverMethod 7: Rename. ini file on the Fedora Linux ServerConclusionWe hope that above-mentioned solutions help you in fixing QuickBooks Error Code H202.