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Clio Launcher Error Message "Assertion Failed"


  • Opening Microsoft Word file through Launcher results in "assertion failed" error message.
  • Launcher crashing and displaying "assertion failed" error message.


  • Clio Launcher (WIndows)
  • Microsoft Word

Additional Information:

  • To find the AppData folder on your computer, please visit this article here.
  • To find out whether your PC is x64, x86 or ARM64, open the Settings app, navigate to System > About, and look at the System type value

Resolution :

1. Uninstall the Clio Desktop App by following these steps (including additional steps)

2. Install up-to-date Microsoft Visual C++ Redistributables from here.

3. Restart the computer

4. Download & install Clio Desktop from Clio's left-hand Documents tab > Desktop Access

5. Follow the on-screen setup instructions 

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