Troubleshooting Telerik NuGet
This article provides solutions to common issues that you may observe when working with the Telerik NuGet server and the NuGet packages that it provides.
One common problem is that your machine (PC or DevOps agent) is behind a proxy. To check if you're experiencing a networking issue, open the following URL in your web browser:
After you enter your telerik.com
password, you should see a JSON search result containing a list of all the Telerik Reporting packages available with your license.
The NuGet package takes too long to install or update on Visual Studio. How to improve the installation and update times?
You can disconnect the project from the source control before running the Update Wizard.
After changing your Telerik password, you get
[Telerik Nuget] The V2 feed at '...' returned an unexpected status code '401 Logon failed.' error in the NuGet Package Manager.
After changing your Telerik password, you must reset your credentials in the
NuGet.config file. To do this, run the
NuGet Sources Update -Name "telerik.com" -Source "https://nuget.telerik.com/v3/index.json" -UserName "your login email" -Password "your new password" command.
The password must contain only ASCII characters.
As an alternative, you can reset your Telerik NuGet Feed credentials from the Windows Credentials Manager
The error may occur if the
nuget.telerik.com server is down.
Test for Networking Problems.
If you hit that error, make sure that the Telerik NuGet Feed is live at https://status.telerik.com/.
On Windows, if you enter and save wrong credentials for the Telerik NuGet or if you change your Telerik credentials, you won't have access to the desired NuGet packages. Before you can enter the correct user name and password, you must clear the saved credentials.
Try resetting your credentials by using the approach suggested in the Telerik NuGet returns 401 Logon failed after password change. If the credentials are not updated, continue with Solution 2 below.
Alternatively, use Windows Credentials Manager to remove the saved credentials:
- In Visual Studio navigate to Tools > NuGet Package Manager > Package Manager Settings. Select NuGet Package Manager, click Package Sources, and remove the listed Telerik NuGet package source.
- Close all open Visual Studio instances (this is so that all NuGet package manager tasks are stopped).
- Open the Windows Credentials Manager. To access it, navigate to Control Panel > User Accounts > Credential Manager.
- Click Windows Credentials.
Scroll through all the entries until you find any that are for
nuget.telerik.comand remove them. Usually, these should be the following:
- If desired, verify the NuGet credentials by inspecting the
NuGet.configfile located in
- Reopen Visual Studio and access the Telerik NuGet server.