Content Manager cannot download anything about actools HOT 2 OPEN

Did you by chance find a solution to this? I'm seeing similar behavior (although I don't see the specific error message you have): all game launches are taking forever since the requests for Custom Shader Patch track/car data seem to be hitting a 60 second timeout:

21:50:14.158: … [PatchBaseDataUpdater:467] TriggerAutoLoadAsync(): Loading entries list…
21:50:14.202: ⊕ [GameDialog:104] PrepareToFixSize()
21:51:14.162: ⚠ [ApiCacheThing:127] GetBytesAsyncInner(): System.Threading.Tasks.TaskCanceledException: A task was canceled.
	   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
	   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
	   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
	   at AcManager.Tools.Helpers.Api.ApiCacheThing.<GetBytesAsyncInner>d__6.MoveNext()
21:51:14.163: … [PatchBaseDataUpdater:470] TriggerAutoLoadAsync(): Done: False

It's also similarly weird for me: CM can update itself and load the changelog, but it cannot for example check for CSP updates or install alternative versions of CSP. Trying to change CSP version results in a similar "check your internet connection" error.

@gro-ove any pointers you could share? I'm a bit at a loss what could cause selective network requests to fail, especially since both are aimed at github from what I can gather from the sources... perhaps some cache corruption issue?

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Got it. In my case this was caused by a faulty network setup: I don't have proper IPv6 connectivity but I did have enough that DNS could resolve IPv6 addresses, and as it turns out acstuff.ru was resolved in IPv6 by CM/dotnet, causing the requests to timeout.
The reason it was failing only for some domains was also that: not all domains resolve IPv6 addresses in which case this setup fell back to IPv4 which worked.

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