Nuget browse list is empty

[Doug]

Today, all of a sudden, the list of packages in the telerik nuget source is empty.  This is keeping me from building locally as well as in Azure devops.   This app is several years old and I build it several times a day and deploy to qa several times a week.  Here is the devops message similar to what I get locally.

2024-02-28T18:00:41.4616269Z Installed:
2024-02-28T18:00:41.4616442Z     88 package(s) to packages.config projects
2024-02-28T18:00:41.4938491Z ##[error]The nuget command failed with exit code(1) and error(Unable to find version '2023.3.1010' of package 'Telerik.UI.for.AspNet.Ajax.Net45'.
  https://api.nuget.org/v3/index.json: Package 'Telerik.UI.for.AspNet.Ajax.Net45.2023.3.1010' is not found on source 'https://api.nuget.org/v3/index.json'.
  https://nuget.devexpress.com/redacted/api: Package 'Telerik.UI.for.AspNet.Ajax.Net45.2023.3.1010' is not found on source 'https://nuget.devexpress.com/redacted/api'.
  https://nuget.telerik.com/V3/index.json: Canceled

Errors in packages.config projects
    Unable to find version '2023.3.1010' of package 'Telerik.UI.for.AspNet.Ajax.Net45'.
      https://api.nuget.org/v3/index.json: Package 'Telerik.UI.for.AspNet.Ajax.Net45.2023.3.1010' is not found on source 'https://api.nuget.org/v3/index.json'.
      https://nuget.devexpress.com/redacted/api: Package 'Telerik.UI.for.AspNet.Ajax.Net45.2023.3.1010' is not found on source 'https://nuget.devexpress.com/redacted/api'.
      https://nuget.telerik.com/V3/index.json: Canceled
    Unable to find version '2023.3.1010' of package 'Telerik.UI.for.AspNet.Ajax.Net45'.
      https://api.nuget.org/v3/index.json: Package 'Telerik.UI.for.AspNet.Ajax.Net45.2023.3.1010' is not found on source 'https://api.nuget.org/v3/index.json'.
      https://nuget.devexpress.com/redacted/api: Package 'Telerik.UI.for.AspNet.Ajax.Net45.2023.3.1010' is not found on source 'https://nuget.devexpress.com/redacted/api'.
      https://nuget.telerik.com/V3/index.json: Canceled)
2024-02-28T18:00:41.4948266Z ##[error]Packages failed to restore
2024-02-28T18:00:41.4958660Z ##[section]Finishing: NuGetCommand

When I open the url, `

https://nuget.telerik.com/V3/index.json

` in a web browser and provide my creds, the returned json is there just fine

This happened back on 1/26/2024 as well, and then it seemed to magically heal itself.  But I have to do a production deployment today and this is holding me up.

[Rumen]

Hi Doug,

Here are a few steps and considerations that might help resolve the issue:

• Clear NuGet Cache: Sometimes, the local NuGet cache can cause issues with fetching packages. You can clear your local NuGet cache by running the command nuget locals all -clear on your development machine. For Azure DevOps, you can add a step in your pipeline to clear the cache before attempting to restore packages.
• NuGet Configuration Check: Ensure that your NuGet configuration (both locally and on Azure DevOps) is correctly set up to authenticate with the Telerik NuGet feed. Authentication issues often lead to packages not being found, as the feed may require credentials to access the packages.
• NuGet Feed URL: Double-check the URL for the Telerik NuGet feed in your configuration files (nuget.config).
• Direct Feed Access Test: Since you mentioned that accessing the feed URL directly in a browser works fine, it suggests that the feed itself is operational. This further points towards a potential issue with how your build process is authenticating with the Telerik NuGet feed.
  
• Feed Service Status: Check Telerik's status page https://status.telerik.com/.  It's possible there might be intermittent issues affecting the service's availability.
  
• Fallback Strategy: As a temporary workaround, you might consider downloading the required Telerik packages manually (from the Download section of Telerik.com) and hosting them in a local a folder. This way, you can reference them directly without relying on the Telerik feed being available. This is not a long-term solution but can help you proceed with your urgent deployment.