If you see a message about "Error 1904: [file path/name/extension] failed to register," don’t worry. Your accounting data and company files are in good shape.
If any of these apply to you, skip to the special cases section at the bottom.
You use Bitdefender
You recently installed Adobe Flash
The Error 1904 message mentions QBversionTool.dll
Download and install the QuickBooks Tool Hub
The QuickBooks Tool Hub helps fix common errors. For the best experience, we recommend using Tool Hub on Windows 10, 64-bit.
We recommend you download the most recent version (184.108.40.206) of the QuickBooks Tool Hub. Save the file somewhere you can easily find it (like your Downloads folder or your Windows desktop). Note: If you've already installed Tool Hub before, you can find out which version you have. Select the Home tab. The version will be displayed on the bottom right or you can select About to view the version.
Open the file you downloaded (QuickBooksToolHub.exe).
Follow the on-screen steps to install and agree to the terms and conditions.
When the install finishes, double-click the icon on your Windows desktop to open the tool hub.
Note: If you can't find the icon, do a search in Windows for QuickBooks Tool Hub and select the program.