404 error when installing Telerik.Licensing fron nuget.org

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Licensing
Ian
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Ian asked on 16 Oct 2025, 11:30 AM

I am trying to install the Telerik.Licensing package from nuget.org, as per your instructions.

No matter which version i try to install, including the current latest stable (1.6.24) i get a 404 error from nuget.telerik.com:

Failed to fetch results from V2 feed at 'https://nuget.telerik.com/nuget/FindPackagesById()?id='Telerik.Licensing'&semVerLevel=2.0.0' with following message : Response status code does not indicate success: 404 (Not Found).
Response status code does not indicate success: 404 (Not Found).

The output in VS does contain a lot of stuff, so it looks like it's trying do do something. This is the contents of the output. For shortness, I have only tried to install the pacjage one a single project:

===> Start of Output:

Attempting to gather dependency information for package 'Telerik.Licensing.1.6.24' with respect to project 'Installers\TeamWorks 64 bit installer', targeting 'Unsupported,Version=v0.0'
Gathering dependency information took 1 ms
Attempting to resolve dependencies for package 'Telerik.Licensing.1.6.24' with DependencyBehavior 'Lowest'
Resolving dependency information took 0 ms
Resolving actions to install package 'Telerik.Licensing.1.6.24'
Resolved actions to install package 'Telerik.Licensing.1.6.24'
NuGet.Protocol.Core.Types.FatalProtocolException: Failed to fetch results from V2 feed at 'https://nuget.telerik.com/nuget/FindPackagesById()?id='Telerik.Licensing'&semVerLevel=2.0.0' with following message : Response status code does not indicate success: 404 (Not Found). ---> System.Net.Http.HttpRequestException: Response status code does not indicate success: 404 (Not Found).
   at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
   at NuGet.Protocol.HttpSource.<>c__DisplayClass15_0`1.<<GetAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.Common.ConcurrencyUtilities.<ExecuteWithFileLockedAsync>d__11`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at NuGet.Common.ConcurrencyUtilities.<ExecuteWithFileLockedAsync>d__11`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.Protocol.HttpSource.<GetAsync>d__15`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.Protocol.V2FeedParser.<LoadXmlAsync>d__52.MoveNext()
   --- End of inner exception stack trace ---
   at NuGet.Protocol.V2FeedParser.<LoadXmlAsync>d__52.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at NuGet.Protocol.V2FeedParser.<QueryV2FeedAsync>d__50.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.Protocol.V2FeedParser.<FindPackagesByIdAsync>d__39.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.Protocol.V2FeedParser.<GetPackage>d__38.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.Protocol.PackageMetadataResourceV2Feed.<GetMetadataAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at NuGet.PackageManagement.UI.UIActionEngine.<GetPackageMetadataAsync>d__27.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at NuGet.PackageManagement.VisualStudio.TaskCombinators.<>c__DisplayClass1_0`2.<<ThrottledAsync>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.PackageManagement.VisualStudio.TaskCombinators.<ThrottledAsync>d__1`2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.PackageManagement.UI.UIActionEngine.<GetPackageMetadataThrottledAsync>d__25.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.PackageManagement.UI.UIActionEngine.<GetRemotePackageMetadataAsync>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.PackageManagement.UI.UIActionEngine.<GetPackageMetadataAsync>d__22.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.PackageManagement.UI.UIActionEngine.<CheckLicenseAcceptanceAsync>d__17.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at NuGet.PackageManagement.UI.UIActionEngine.<>c__DisplayClass12_0.<<PerformActionImplAsync>b__0>d.MoveNext()
Time Elapsed: 00:00:00.3424096
========== Finished ==========

 

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Nadya | Tech Support Engineer
Telerik team
answered on 17 Oct 2025, 07:54 AM

Hello, Ian,

According to the provided error, it seems that it tries to install the Licensing package from nuget.telerik.com and this is why it can not find it there.

Note, Telerik.Licensing package resides in nuget.org. Please make sure that you download it from here: https://api.nuget.org/v3/index.json 

See the picture below:

Can you please check the package source mapping on your side and let me know if it points to the correct URL where Telerik.Licensing nuget is located.

Looking forward to your reply.

Regards,
Nadya | Tech Support Engineer
Progress Telerik

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Ian
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commented on 19 Oct 2025, 10:20 AM

Thanks for response.

 I discovered that, on the Manage Package for Solution page, next to the 'Package source' (which i had set to nuget.org), there is a little settings icon. This listed the various sources, and even though the drop-down box said 'nuget.org', the setting had 'nuget.telerik.com' ticked as well, so maybe it was looking there FIRST. Un-ticking that option in these setting made it it look ONLY at nuget.org, which installed the Telerik.Licence package perfectly.

Thanks

Nadya | Tech Support Engineer
Telerik team
commented on 20 Oct 2025, 06:22 AM

Hello, Ian,

I am really glad to hear that you managed to adjust the package sources accordingly to pick up the licensing nuget from the right source, and as a result the licensing package error is now resolved. It's always helpful to trace back what might be wrong when package sources are involved. Thank you for sharing details. 

If you have any other questions, do not hesitate to contact me.

Regards,
Nadya

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Nadya | Tech Support Engineer
Telerik team
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