Failed to authenticate with Peloton. Missing CSRF token

[LeslieMurphy]

Describe the bug
Got repeated errors for missing CSRF. Then finally it logged in and worked.
How can I help gather any additional information you might need? Should I bump log level to Debug or Verbose?
See also issue 795 - someone else also encountered this isue.

To Reproduce
Unclear - it is now working, even when I restart P2G.

Expected behavior
Should authenticate

Logs
[02/02/2026 12:00:48 -07:00][FATAL][PelotonAuthApiClient] Failed to authenticate with Peloton.
System.InvalidOperationException: Missing CSRF token
at Peloton.Auth.PelotonAuthApiClient.InitiateAuthFlowAsync(String authorizeUrl, OAuthConfig config) in D:\a\peloton-to-garmin\peloton-to-garmin\src\Peloton\Auth\PelotonAuthApiClient.cs:line 149
at Peloton.Auth.PelotonAuthApiClient.PerformOAuthLoginAsync(OAuthConfig config, PelotonSettings pelotonSettings) in D:\a\peloton-to-garmin\peloton-to-garmin\src\Peloton\Auth\PelotonAuthApiClient.cs:line 98
at Peloton.Auth.PelotonAuthApiClient.LoginWithOAuthAsync(PelotonSettings settings) in D:\a\peloton-to-garmin\peloton-to-garmin\src\Peloton\Auth\PelotonAuthApiClient.cs:line 80
at Peloton.Auth.PelotonAuthApiClient.Authenticate() in D:\a\peloton-to-garmin\peloton-to-garmin\src\Peloton\Auth\PelotonAuthApiClient.cs:line 61
[02/02/2026 12:00:48 -07:00][ERROR][] UI - Failed to load Peloton workouts.

System.InvalidOperationException: Missing CSRF token
at Peloton.Auth.PelotonAuthApiClient.InitiateAuthFlowAsync(String authorizeUrl, OAuthConfig config) in D:\a\peloton-to-garmin\peloton-to-garmin\src\Peloton\Auth\PelotonAuthApiClient.cs:line 149
at Peloton.Auth.PelotonAuthApiClient.PerformOAuthLoginAsync(OAuthConfig config, PelotonSettings pelotonSettings) in D:\a\peloton-to-garmin\peloton-to-garmin\src\Peloton\Auth\PelotonAuthApiClient.cs:line 98
at Peloton.Auth.PelotonAuthApiClient.LoginWithOAuthAsync(PelotonSettings settings) in D:\a\peloton-to-garmin\peloton-to-garmin\src\Peloton\Auth\PelotonAuthApiClient.cs:line 80
at Peloton.Auth.PelotonAuthApiClient.Authenticate() in D:\a\peloton-to-garmin\peloton-to-garmin\src\Peloton\Auth\PelotonAuthApiClient.cs:line 61
[02/02/2026 12:04:34 -07:00][ERROR][] UI - Failed to load Peloton workouts.

Installation (please complete the following information):

• OS: Windows 11, .NET runtime 9.0.11
• Method: EXE from Zip bundle
• Version: 6.0.1

Additional context

[vdobrov42]

Just ran into this same exception myself. It seems to be related to the wrong password that's not being correctly reset after updating it. Restarting the application and trying again seems to have fixed it for me.

The steps I can currently think of are:

1. Run the application for the first time
2. Save wrong Peloton password
3. Attempt to sync and receive the exception
4. Update the password and save settings
5. Attempt to sync again and yet receive the same exception
6. Restart the application
7. Attempt to sync to notice that the exception is gone

[LeslieMurphy]

Thanks. That matches my experience. I don't recall initially entering a wrong password, but I might have. Now P2G is working reliably every time I launch the app, so the issue has not recurred. I am at your "step 7" thankfully.