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ychia
Staff
Staff
January 10, 2023

Technical Tip: Windows 11 is unable to run FortiClient with JavaScript error

  • January 10, 2023
  • 1 reply
  • 16247 views
Description

This article describes that Windows 11 PRO has issue to load FortiClient with 'A JavaScript error occurred in the main process' and how to fix it.

 

The below message is appearing:

 

Uncaught Exception:

TypeError: Cannot read property 'Tracelog' of null 

 

ychia_1-1673336916312.png
Scope FortiClient.
Solution

To fix the issue:

 

1) Uninstall FortiClient.
2) Uninstall Microsoft Visual C++.
3) Reboot PC.
4) Reinstall FortiClient.
5) Reinstall Microsoft Visual C++ 2015, 2017 or 2019.

1 reply

New Member
September 8, 2026

I still have such an issue with Windows 11 on all stations of your students!
In place of fixing it with a complex process for us (exposed above), do a new version of FortiClientVPNInstaller.exe - 7.4.3.4726 be able to fix such issue ?

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