3 Methods to Rectify Update Issue: QuickBooks Error Code 1642

QuickBooks Error Code 1642 While trying to download or install the newest QBDT app update, you will encounter the QuickBooks error code 1642. The reasons behind its occurrence include Microsoft .NET Framework issues, Windows Firewall blocking your device, insufficient admin rights, or incorrect application installation. You can rectify it by fixing the NET Framework and using the QuickBooks Install Diagnostic Tool. Go through this blog thoroughly to learn more about QuickBooks error code 1642, and it will also help you resolve errors like QuickBooks error code 1601 on your device.

Working Solutions to Resolve the QuickBooks Error Code 1642

Here is the list that you will implement to troubleshoot the error code 1642 from your QuickBooks Desktop:

Recommended to Read: How Do I Fix QuickBooks Error 15240?

Solution 1: Disable the antivirus application on your device

  • First, you have to tap the Start menu or the Windows key on your keyboard
  • Under the menu, pick Settings > Update
  • Check for Windows Security > click on it
  • Now, look for real-time protection
  • Tap on it > turn it off
  • You can launch scheduled scans on your device
  • Now it will stop the scanning process for the file you want to install or download on the device

Solution 2: Fix and reinstall the Microsoft .NET Framework

Step I: Utilise the QuickBooks Install Diagnostic Tool

  • First, you need to exit any open Windows for QuickBooks
  • Now you have to download the newest version (1.5.0.0) of the QBTH application, and after that, save the file in a location you can easily find it
  • Open the downloaded QuickBooksToolHub.exe file
  • Now, you need to go through the guidelines displayed on the screen to install the application and accept all the terms and conditions
  • As the installation process gets completed, click twice on it & run the tool hub application from its icon on the desktop
  • Now, in the Tool Hub app> move to the Installation Issues tab
  • Select the QuickBooks Install Diagnostic Tool
  • Now, you need to exit all the programs & press twice on the QBInstall_tool_v2.exe and launch it
  • You have to wait for 20 minutes for the tool to launch and complete the diagnostic process. So have patience
  • Once it completes the diagnosis procedure, you need to restart the device and make sure that all the components are updated to the new version

Step II: Windows OS update

  • Click the Windows Key on the keyboard
  • Then, type the Windows Update in the search bar that appears on your screen
  • At the end, hit the check for updates option & then move forward with downloading the required updates

Solution 3: With the admin privileges, install the QB updates

  • First, you have to close the QuickBooks Desktop application
  • Head to your PC’s home screen
  • Right-tap on the QB Desktop icon
  • Choose Run as Administrator

Conclusion

In this blog, we have simplified the steps to resolve QuickBooks error code 1642 for you. However, you will come across similar errors, such as QuickBooks error code 1601 and 1603, while resolving them. Moreover, if you need any expert's advice, you need to connect with them +1.833.802.0002 directly.

Edit

Pub: 24 Nov 2025 10:31 UTC

Edit: 24 Nov 2025 10:39 UTC

Views: 5