Patch not working.

[Robbie941]

Describe the bug
Downgrade to version 1.5.97.0 does not work.

To Reproduce
Steps to reproduce the behavior:

1. Select game install location (Skyrim Special Edition)
2. Select version 1.5.97.0 to install. (Best of Both Worlds unticked)
3. Click 'Start Downloading'

Expected behavior
SkyrimSE.exe version to be downgraded to version 1.5.97.0

Desktop (please complete the following information):

• OS: Windows 10
• Game Version you started from: 1.6.342
• Game Version you downgraded to: 1.5.97.0
• Mod Manager: Nexus Mod Manager

Additional context
After attempting the download, the following message appeared:

Steam has provided game information

Caching manifests

Getting Manifest 489833 - 2289561010626853674

Loading CDN servers

20 servers found

(Retry 1 of 5), got exception Response status code does not indicate success: 401 (Unauthorized)., waiting 100ms

(Retry 2 of 5), got exception Response status code does not indicate success: 401 (Unauthorized)., waiting 200ms

(Retry 3 of 5), got exception Response status code does not indicate success: 401 (Unauthorized)., waiting 400ms

(Retry 4 of 5), got exception Response status code does not indicate success: 401 (Unauthorized)., waiting 800ms

(Retry 5 of 5), got exception Response status code does not indicate success: 401 (Unauthorized)., waiting 1600ms

While running
Exception: System.Net.Http.HttpRequestException: Response status code does not indicate success: 401 (Unauthorized).
at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
at System.Net.Http.HttpClient.GetByteArrayAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)
at Wabbajack.Networking.Steam.Client.<>c__DisplayClass52_0.<b__0>d.MoveNext()
--- End of stack trace from previous location ---
at Wabbajack.Common.CircuitBreaker.WithAutoRetryAsync[TR,TE](ILogger logger, Func1 f, Nullable1 delay, Nullable1 multipler, Nullable1 maxRetries)
at Wabbajack.Common.CircuitBreaker.WithAutoRetryAsync[TR,TE](ILogger logger, Func1 f, Nullable1 delay, Nullable1 multipler, Nullable1 maxRetries)
at Wabbajack.Networking.Steam.Client.GetAppManifest(UInt32 appId, UInt32 depotId, UInt64 manifestId)
at Patcher.ViewModels.MainWindowViewModel.Start() in c:\oss\ussedp\Patcher\ViewModels\MainWindowViewModel.cs:line 304
at Patcher.ViewModels.MainWindowViewModel.Start() in c:\oss\ussedp\Patcher\ViewModels\MainWindowViewModel.cs:line 306
at Patcher.ViewModels.MainWindowViewModel.Start() in c:\oss\ussedp\Patcher\ViewModels\MainWindowViewModel.cs:line 306
at Patcher.ViewModels.MainWindowViewModel.<.ctor>b__72_17() in c:\oss\ussedp\Patcher\ViewModels\MainWindowViewModel.cs:line 122
at Patcher.ViewModels.MainWindowViewModel.<.ctor>b__72_3() in c:\oss\ussedp\Patcher\ViewModels\MainWindowViewModel.cs:line 120

[jimmyhazard]

Got the exact same error.

[garemma90]

got the exact same error ..