Simlink authentication error


This had been working perfectly but now it will not connect. I have tried a fresh install of the simlink app but no luck. Copied below is the latest error log.

[2021-12-15 11:12:32] [] [ERROR] REST ERROR:




[2021-12-15 11:12:33] [] [INFORMATION] OIDC_refresh_tokens_CALL[7665ed20ecd06b948b2c011dfb47622e]
[2021-12-15 11:12:34] [] [ERROR] OIDC_refresh_tokens ERROR:response json contains no ‘access_token’: {“error”:“invalid_grant”}
[2021-12-15 11:13:26] [] [INFORMATION] OIDC_refresh_tokens_CALL[7665ed20ecd06b948b2c011dfb47622e]
[2021-12-15 11:13:26] [] [ERROR] OIDC_refresh_tokens ERROR:response json contains no ‘access_token’: {“error”:“invalid_grant”}

Running MSFS 2020 on Windows 11

Help Please

Same issue here on XPlane11

Hi …,


I suggest you start from scratch with latest Charts and Simlink . Please disable any Antivirus and Firewall.

In Simlink Plugin Settings uninstall Simlink plugin from your FS , then completely uninstall Simlink and Charts using Windows Programs and Features exactly as under .

If they exist delete directories
c:\Users\username\AppData\Roaming\Navigraph and c:\Program Files\Navigraph

Then download and install latest Simlink and Charts Desktop using the default prompted locations.

Restart computer.

Please let us know how you get on.


Mine is now working. I followed the instructions provided by Ian in this thread and it worked like a charm.

1 Like

Thanks for update. Glad it is resolved.

Happy flying.


This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.