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SafeExamBrowser / seb-win-refactoring

Safe Exam Browser for Windows.
https://www.safeexambrowser.org/news_en.html
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"failed to check availability" #536

Closed gamma-gamer closed 1 year ago

gamma-gamer commented 1 year ago

I have on student at my school who can't launch BookWidgets through SEB. All other students (with the same hardware) have no issues.

Using the built-in reset functionality fails, using the SEB verificator fails. Remove and reinstalled SEB, doesn't solve the issue. Installed older version (the one other students use, version 3.1.1), doesn't solve the issue.

2022-12-05_10h27m06s_Runtime.log 2022-12-05_10h19m07s_ResetUtility.log 2022-12-05_10h36m33s_Runtime.log

dbuechel commented 1 year ago

This is an issue with the particular system of the student:

2022-12-05 10:36:35.155 [04] - ERROR: [NetworkResourceLoader] Failed to check availability of 'sebs://www.bookwidgets.com/...'!

   Exception Message: Er is een fout opgetreden bij het verzenden van het aanvraag.
   Exception Type: System.Net.Http.HttpRequestException

   bij System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   bij System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   bij SafeExamBrowser.Configuration.DataResources.NetworkResourceLoader.<>c__DisplayClass10_0.<<Execute>b__0>d.MoveNext() in C:\Users\appveyor\projects\seb-win-refactoring-3pv4craowibjxry0\SafeExamBrowser.Configuration\DataResources\NetworkResourceLoader.cs:regel 103
--- Einde van stacktracering vanaf vorige locatie waar uitzondering is opgetreden ---
   bij System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   bij System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   bij SafeExamBrowser.Configuration.DataResources.NetworkResourceLoader.Execute(HttpRequestMessage request) in C:\Users\appveyor\projects\seb-win-refactoring-3pv4craowibjxry0\SafeExamBrowser.Configuration\DataResources\NetworkResourceLoader.cs:regel 107
   bij SafeExamBrowser.Configuration.DataResources.NetworkResourceLoader.IsAvailable(Uri resource) in C:\Users\appveyor\projects\seb-win-refactoring-3pv4craowibjxry0\SafeExamBrowser.Configuration\DataResources\NetworkResourceLoader.cs:regel 158

   Inner Exception Message: De aanvraag is afgebroken: Kan geen beveiligd SSL/TLS-kanaal maken.
   Inner Exception Type: System.Net.WebException

   bij System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
   bij System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar)

It does appear that they have a configuration or even security issue, as their computer cannot establish a secure connection to the server in order to download the configuration file.