Hello manish_incorp,

Let's check to make sure that QuickBooks and  WebConnector are in the same file location.

You can find the QBWebconnector folder in the following location: C:\Program Files(x86)\Common Files\Intuit\QuickBooks\ or C:\Program Files\Common Files\Intuit\QuickBooks\.

After that, try opening the WebConnector again.

You might also want to check out this article for your reference: https://developer.intuit.com/app/developer/qbdesktop/docs/get-started/get-started-with-quickbooks-we....

Get back to me if you have additional questions. I'm here to help you some more.