A QuickBooks error code H202 occurs when the user is unable to access the company files. A problem with communication occurs between the workstation and the company file. This is because the company file is located on another system. Other reasons also exist. Visit the site for more information.
https://opencloudmanifesto.org/quickbooks-error-h202/

I have been using QuickBooks for my accounting. But, when I was installing this tool on my new desktop, I got some technical errors but then I got to know about the QuickBooks diagnostic tool. It helped me fix the errors. Check the website for more.
https://opencloudmanifesto.org/quickbooks-install-diagnostic-tool/