nuget can't connect to https://nuget.telerik.com/nuget

[Russ]

I periodically can not connect to NuGet from Visual Studio. This is happening at the moment. Is the nuget.telerik.com server down?

When I use this in my browser...  

https://nuget.telerik.com/nuget

I am prompted for login, and after entering my credentials I see the page below

but in Visual Studio, it keeps on asking for my credentials when I try to use NuGet.

 

<?xml version="1.0" encoding="UTF-8" standalone="true"?>
<service xmlns="http://www.w3.org/2007/app" xmlns:app="http://www.w3.org/2007/app" xmlns:atom="http://www.w3.org/2005/Atom" xml:base="https://nuget.telerik.com/nuget/"><workspace><atom:title>Default</atom:title><collection href="Packages"><atom:title>Packages</atom:title></collection></workspace></service>

[Russ]

This is working now. Go figure?

[Joel]

I get 503 Service Unavailable @ 12/15/2021 12:36PM EST. Any known issues? 

https://nuget.telerik.com/nuget/FindPackagesById()?id=%27Telerik.UI.for.AspNet.Core%27%27

 

[Lance | Senior Manager Technical Support]

Hi Joel, yep, there's an issue and we're currently working on it. You can always check https://status.telerik.com/ if you experience issues to first check if there's a known problem.

For now, click 'subscribe' to the Incident on that status page and you'll get notified immediately when I post the next Incident update

[Lance | Senior Manager Technical Support]

Hello Russ,

I'm glad to see you're up and running.

If this happens again, sometimes it's useful to close Visual Studio completely (this clears credentials) reopen the solution and then open the Nuget Package Manager. After you sign back in (and check the remember me checkbox) it shouldn't ask for authentication until the next time.

I'll mark this ticket as closed, but let us know if you experience any further trouble.

Regards,
Lance | Tech Support Engineer, Sr.
Telerik by Progress

[Aryeh]

I am getting this error now and restarting Visual Studio is not helping!

Aryeh

[Lance | Senior Manager Technical Support]

Hello Aryeh,

Try deleting the package source, then re-adding it using a slightly different name. This will prompt NuGet Credentials manager to appear again where you can re-enter your Telerik credentials for a new connection.

Note that this tends to happen with VS 2015, I've not seen an instance of this happening in VS 2017 yet.

Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik

[Aleksandr]

have the same issue right now, cant get package from 

https://nuget.telerik.com/nuget

 

server constantly asks for login / pass

[Dan]

I have just tried this in VS2017 Prof and get the following:

[Telerik1] The V2 feed at 'https://nuget.telerik.com/nuget/Search()?$filter=IsLatestVersion&searchTerm=''&targetFramework=''&includePrerelease=false&$skip=0&$top=26&semVerLevel=2.0.0' returned an unexpected status code '401 Logon failed.'.

I tried closing Visual Studio and delete/create package source but this does not clear the credentials.

It looks like I will have to add the assemblies manually.

 

[Yana]

Hi Ian,

I've just tested connecting to the Nuget Server from VS 2017 and it seems running without a problem.

Regarding the "Logon failed" error - you could try to update the credentials for Telerik Nuget Server from Windows' Control Panel > Credential Manager > Windows Credentials.

Another approach I could suggest is to try manually storing the credentials, see this SO post for the CLI command.

Let me know whether this helps.

Regards,
Yana
Progress Telerik

[Sheng Kuo]

Hello,

I've changed my login password before, now I can't get any search result from nuget server of Telerik,

I always got a error message like the following:

https://nuget.telerik.com/nuget/Search()?$filter=IsLatestVersion&searchTerm=''&targetFramework='xamarinios10%7Cmonoandroid60'&includePrerelease=false&$skip=0&$top=26&semVerLevel=2.0.0' 的 V2 摘要傳回未預期的狀態碼 '401 Logon failed.

 

Could you help please?

 

 

[Sheng Kuo]

By the way, I also remove credentials related to Telerik from  Windows Credentials,

Nuget Manager shown up a user/pwd prompt to me, but even if I give a correct user/pwd, same error shown again.

[Yana]

Hi Sheng,

Indeed, it seems there is a temporary issue with the Nuget server and at the moment it is not available - the team is working on fixing it.

In the meantime, you could download the needed UI for Xamarin Nuget packages from the Downloads section inside your Telerik account, copy them to a local folder on your machine and add a package source inside Nuget Package Manager settings pointing to that folder - I've attached a screenshot to show you these settings.  In this way,  you could continue developing using UI for Xamarin components.

I will update the thread when the issue is resolved. I am sorry for the caused inconvenience.

Regards,
Yana
Progress Telerik

[Sheng Kuo]

Yana, The nuget server seems working fine now. 

I can access the Nuget server of Telerik, maybe you've already fixed it.

 

Thank you for your attention!

[Yana]

Hi Sheng,

Yes, the Nuget server is up and running. Thank you for confirming that.

Regards,
Yana
Progress Telerik

[Adam]

This appears to be happening again... since April 9 I my Bitrise builds are failing because they cannot download the latest version of the Telerik NuGet packages from the source... lucky for me Bitrise stores a NuGet cache and I was able to revert the Telerik NuGet version to the previous one and use the cache to build my releases. not cool. 

[David]

Can confirm that this has started happening again. Appears to have been at least within the last 24 hours, maybe more.

[Mick]

The certificate expired yesterday

[Yana]

Hi guys,

The issue with the expired certificate is already resolved.  Let us know if you still experience such errors.

Regards,
Yana
Progress Telerik

[David]

Can confirm this is now working, thanks Team.

[David Marconnet]

We cant hit https://nuget.telerik.com/nuget today from VS 2017.  Getting "no packages found".  We are able to load from a browser and see the XML though.

[Lance | Senior Manager Technical Support]

Hello David,

I just tested it and the packages are loading, you may have timed out (look at nuget output) or the search term might be a little off. 

Here's a screenshot to help guide you on your next attempt:




I see that you primarily work with AJAX products, this is a Xamarin thread. However, just to make sure, I did a second search for "AJAX", and the appropriate packages loaded as well:



Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik

[Shalin]

hi

having same problem after successful use, when try to switching to telerik nuget server it stopped.

Error is : 

[TelerikNu] The V2 feed at 'https://nuget.telerik.com/nuget/Search()?$filter=IsLatestVersion&searchTerm=''&targetFramework='portable45-net45%2Bwin8%7Cnet46%7Cmonoandroid81%7Cxamarinios10%7Cportable45-net45%2Bwin8%2Bwp8%2Bwpa81'&includePrerelease=false&$skip=0&$top=26&semVerLevel=2.0.0' returned an unexpected status code '401 Logon failed.'.

 

1) Telerik didn't ask me login credential

2) tried removing and add again nuget source

3) tried clearing nuget cache 

I am using visual studio 2017 enterprise version 15.7.2, .Net framework version 4.7.02556

[Shalin]

Following steps worked for me,

1) Delete Telerik credential (i used Windows Credential Manager)

2) Then open "VS 2013" open one of project refresh telerik nuget then enter credential again

3) open vs 2017, TaDaa.... its working

Silly.......

[Andreas]

!SOLVED!
If someone has the same Problem:
Problem is the trailing "/"
"https://nuget.telerik.com/nuget" works but "https://nuget.telerik.com/nuget/" does not work. Also wrong in telerik documentation.

[Lance | Senior Manager Technical Support]

Hi Andreas,

Correct, if there is a trailing slash, then the query will never be successful.

For example, if the source URL has a trailing slash, then the question will get constructed like this:

https://nuget.telerik.com/nuget/?queryGoesHere

That will not work, because the package query needs to be formed like this:

https://nuget.telerik.com/nuget?queryGoesHere

Documentation Fix

The UI for Xamarin documentation is correct - https://docs.telerik.com/devtools/xamarin/installation-and-deployment/telerik-nuget-server 

Which documentation are you referring to? I'll fix it asap.

Regards,
Lance | Team Lead - US DevTools Support
Progress Telerik

[Andreas]

Wow, super quick reply. Found the fix for myself because the documentations are different.

https://docs.telerik.com/aspnet-core/knowledge-base/setup-private-nuget-feed-azure

is wrong, see attachment

[Lance | Senior Manager Technical Support]

Hi Andreas,

Thank you! I have opened a Pull Request to fix the nuget.config - https://github.com/telerik/kendo-ui-core/pull/5786 

Thank you for bringing the incorrect documentation example to my attention. As a small token of appreciation, I have updated your Telerik Points.

Regards,
Lance | Team Lead - US DevTools Support
Progress Telerik

[Lance | Senior Manager Technical Support]

Hello Alex,

You can quickly determine if this a problem with the server, or a problem with Visual Studio 2015. Open your web browser and do the following: 

1 - Enter the URL in browser: https://nuget.telerik.com/nuget
2 - The web browser will prompt you for your credentials

If you successfully connect, you'll be served the WebService details and they'll appear on the page

<service xmlns:atom="http://www.w3.org/2005/Atom" xmlns:app="http://www.w3.org/2007/app" xmlns="http://www.w3.org/2007/app" xml:base="https://nuget.telerik.com/nuget/">
...
</service>

This means that the problem is with Visual Studio 2015 the NuGet Credential manager for Visual Studio 2015. There is a known issue where sometimes it clips characters from the end of the auth request, so the credentials being sent to our server are wrong, even though you typed in the correct ones.

Try my suggestion to the other folks in this thread, delete the package source and re-add it.  Alternatively, if you can, switch to Visual Studio 2017. I have not received a report of this happening in VS 2017.

Let us know how it goes.

Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik

[Lance | Senior Manager Technical Support]

Hi Shalin,

The fastest way to fix this is to directly edit the saved credentials using Windows Credential Manager.

1 - Open the Credential Manager and switch to "Windows Credential"
2 - Scroll down and find any credential for "nuget.telerik.com"
3 - Expand the item, click "edit", and update the password

There can sometimes be two entries, one named "VS_Credentials_nuget.telerik.com" and another named "nuget.telerik.com". To help guide you, here's a screenshot:



Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik

[Dana]

I am able to authenticate via Nuget however when I choose a package to install I get the following cryptic error. I have not found a solution for this. Any ideas?

 

SeverityCodeDescriptionProjectFileLineSuppression State
ErrorFailed to fetch results from V2 feed at 'https://nuget.syncfusion.com/nuget_aspnetmvc/nuget/getsyncfusionpackages/aspnetmvc/Packages(Id='KendoUIProfessional',Version='2018.2.530')' with following message : Response status code does not indicate success: 500 (Internal Server Error).
Response status code does not indicate success: 500 (Internal Server Error).0

[Lance | Senior Manager Technical Support]

Hello Dana,

That error is coming from Syncfusion's NuGet server, not ours. Your NuGet Package Manager is trying to search the Syncfusion NuGet server for Kendo UI.

Double check that your Package Sources list is using https://nuget.telerik.com/nuget and not https://nuget.syncfusion.com as the source URL for the "Telerik" package source.

Here's a screenshot of what it should look like:



Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik

[Teemee]

Hello, VS is not prompting the credentials window. I already did what you said in the previous messages. See screenshot.

[Teemee]

Hello, VS is not prompting the credentials window anymore. I previously provided the wrong account. I already restarted visual studio, clear the NuGet cache and delete the package Source. See screenshot.

[Lance | Senior Manager Technical Support]

Hi Teemee,

When Visual Studio no longer gives you the credentials popup, the only was to update the stored credentials is to use the windows Credential Manager.

Switch to the "Windows Credentials" tab, the scroll down through all the stored credentials and look for any items that use the server's URL. Expand the item(s) and click the edit button to make changes (i.e. change email or password).

Here's a screenshot to guide you



That being said, we are aware of a small problem with the NuGet server where periodic 404s occur. Just try again until it connects, this is a temporary issue that resolves after a minute or two.  We are pushing out a permanent fix for this next week.

Regards,
Lance | Technical Support Engineer, Principal
Progress Telerik

[Teemee]

Hi Lance, I already previously check the credentials manager. For some reason the password does not change after editing and saving so I decided to delete the credentials assuming it will show the pop-up window, but it still not showing. I try to add the credential in "Add a windows credential" but it says "This information cannot be saved. Make sure the information is correct and that all required fields are completed" I provided the network address as https://nuget.telerik.com/nuget with my username and password. Any other recommendation for this issue?

[Teemee]

Hello Lance, I just now saw a Generic Credential with Telerik details in Credentials Manager. I tried to update the username and password, delete then add the Telerik resource package, clear the cache of NuGet and restart the visual studio. After all of that I try to search NuGet packages from the telerik package source but It did not show anything. See images attached for results. Any recommendations for this issue?

[Teemee]

Hi Lance, I already seen the NuGet packages by installing a trial version of Telerik UI for Xamrin.

[Lance | Senior Manager Technical Support]

Hello Teemee,

I've discovered the reason for your trouble, it seems you have two accounts with us:

- One account, which appears to be your work account, has a trial license that was started yesterday
- The other account (yahoo email) has no licenses.

This is the main reason why you won't see the Xamarin package in the Telerik NuGet feed. The Telerik NuGet server checks your account for licenses, and only shows the products that account can install.


Important - Licensed User

It is not uncommon for an employer to purchase the license, but you are the developer who needs to use it. If this is the case, have your employer/purchaser assign you as a Licensed User in the Manage Licensed Users portal. 

Once you're assigned as a Licensed User, you will see the items in the NuGet feed for the account that has the licenses. Additionally, when you're assigned a license, you get to use that license's support package an open support tickets.


I hope this information was helpful.

Regards,
Lance | Technical Support Engineer, Principal
Progress Telerik

[Teemee]

Hi Lance,

Noted. I already used my company email account.  Is there any documentation in Calendar control about showing a detail view when clicking a day in monthview?

[Lance | Senior Manager Technical Support]

Hi Teemee,

It looks like Yana replied to your question in the identical support ticket (1386539).

If you have any further questions about the Calendar demo, please reply in the support ticket so that Yana can help directly.

Regards,
Lance | Technical Support Engineer, Principal
Progress Telerik

[Ahsen]

Hello,
    

[Ahsen]

Hello,
   What I did was removed the information from Credentials Manager. Deleted the Nuget package source from Visual Studio. Exited both programs.

Configured the NugetPackage Source:
https://docs.telerik.com/aspnet-mvc/getting-started/nuget-install

Example: NuGet Sources Add -Name "Telerik.com" -Source "https://nuget.telerik.com/nuget" -UserName "[e-mail]" -Password "<Super_Secure_PW>"

Opened up Visual Studio and all started to work again.

Thank you,
Ahsen

[liam]

Really you are the best.

[Michael]

About 12 hours of frustration and countless web searches and a support ticket with Telerik that has gone nowhere.

This was finally the solution for me. The duplicate entries were causing the problem. I suspect that this was caused by the installation of the Telerik Blazor demo control suite.

The solution is completely unobvious and not documented anywhere that I have been able to find except for here.

Thank you for the very helpful post.

 

Michael

[Jan]

Hi,

I tried everything posted here (remove nuget source, remove credentials, restarted everything several times etc.) but only getting:

"401 Logon failed."

when trying to install the blazor Telerik.UI.for.Blazor.

This is very frustrating.

[Lance | Senior Manager Technical Support]

Hello Jan,

It looks like you just got the license assigned and you've never had a license before. The most likely reason for the login issue is the NuGet server hasn't synced up yet. It normally takes between 20 and 30 minutes, but sometimes can take longer if you're a new customer. Worst case scenario, it does a full sync every 24 hours.

Try again in 1-2 hours, if that still doesn't work open a Technical Support Ticket here and the Blazor team will take a closer look to make sure everything is all set tonight.

 

Invalid Characters in Password

Although this is typically only a problem in CI/CD, an ampersand in the password can break parsing (because it is an escape character). See the comment in my blog post https://www.telerik.com/blogs/azure-devops-and-telerik-nuget-packages

Regards,
Lance | Manager Technical Support
Progress Telerik

[Jan]

Hello Lance,

thank you for the quick reply. The hint with the invalid characters solved it.

Just for your information - I did not have any ampersands in there but section signs ("§"). I removed them from my password, now it's working. This took me many hours to find out which I better could have spent working... please update your documentation.

Regards

Jan

[Lance | Senior Manager Technical Support]

Hi Jan,

This thread is for Xamarin, but I'm guessing you're referring to UI for Blazor documentation? In either case, I'll see about adding more 'tips and tricks' to the different NuGet documentation articles for the different products.

This problem is not specific to Telerik, we use a standard NuGet server implementation with authentication. I will also report the problem to Microsoft in the hopes a more permanent server-level fix can be implemented.

Regards,
Lance | Manager Technical Support
Progress Telerik

[Jan]

Hi Lance,

yes, I meant the UI for Blazor docs. Sorry if I posted it in the wrong thread, but I guess also Xamarin users might run into that trouble.

[Lance | Senior Manager Technical Support]

Hi Jan,

A quick update for you. I added a new section to the Blazor docs so that folks may find it easily in the future.

As part of that new section, I have added a quick PowerShell tip to HtmlEncode so you can keep any special characters you want in your password

Add-Type -AssemblyName System.Web
[System.Web.HttpUtility]::HtmlEncode('my§uper&P@§§word')

Now you can use the encoded result in your Credential Manager or other CI/CD store credentials.

Regards,
Lance | Manager Technical Support
Progress Telerik

[Jan]

Hi Lance, perfect, thank you very much for the fast reaction.

[Hossein]

If you put wrong password for Nuget Package on Visual Studio, the only way to fix it to remove all trace of it and re-add it

1) Delete the item from your Nuget Package Manage on your Visual Studio and close Visual Studio

2) Go to Run and type  %AppData%, it open the folder, find "Nuget" folder and find Nuget.config,  Open the file and remove the Telerik Line

3) Search for Manage Network Password  and open it and find "Telerik" saved password and delete it. 

4) open Visual Studio and re-add Telerik nuget  (https://docs.telerik.com/reporting/using-reports-in-applications/how-to-add-the-telerik-private-nuget-feed-to-visual-studio) 

5) right click on Solution and choose "Restore Nuget Package" and it will ask for username password.  Make sure to put right email and password to your telerik account

 

HJ