LigierDiag.exe shows error

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M.Maidhof
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LigierDiag.exe shows error

Post by M.Maidhof » Wed 4. Mar 2026, 08:56

Hello,

we received some support requests regarding an issue with the 3rd party software Ligier G499Diag Software, which shows the following error message:
Ligier_G499Diag.exe.jpg
Ligier_G499Diag.exe.jpg (15.24 KiB) Viewed 9788 times
To fix the issue, please install the latest PCAN-PassThru drivers from our website and restart your Windows once:

https://www.peak-system.com/fileadmin/m ... ssThru.zip

Please use the driver version 4.x which is delivered with the Software package from Ligier. If you already have installed driver version 5.x, please downgrade to 4.x as written here:

viewtopic.php?t=8010

regards

Michael

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