NuGet Add Pacakge Error

[CareyYang]

the error happened When I add IdentityServer4 package, the error massage is "version information could not be retrieved from Nuget pacakge repository". the first,enter ctrl+shift+p

the second, I select the first, Add package，
the third,I enter "IdentityServer4",
the fourth, I select "IdentityServer4"
after it show this error,the image:

How I can do? thanks for you first.

[786744873]

I have meet the same question,and try many time,but I still can't resolve this problem untill now.
Please someone can help us,please

[jmrog]

I've tried to reproduce this many times, but I never have a problem. Can one of you please confirm whether this is still happening for you? Can you perhaps provide me with more details, such as VSCode version, operating system, and any other information you think might be relevant (e.g., whether you are behind a proxy of some kind)?

[jmrog]

Can you also mention where in the world you are located geographically? I'm starting to suspect that there could be an issue in a particular region.

[786744873]

Can you also mention where in the world you are located geographically? I'm starting to suspect that there could be an issue in a particular region.

Thank you for your replay,sir.
I am a Chinese Developer.From last week until now,I find many developer have the same thing happend on me.such as :https://tieba.baidu.com/p/6112114402?red_tag=1008495548

I take some screenshot of this problem https://send.firefox.com/download/f4b4890ebb060194/#_Ip9_bbHRa2FcyzFzkeFpg

VSCode Version: 1.34.0
Commit: a622c65b2c713c890fcf4fbf07cf34049d5fe758
Date: 2019-05-15T21:59:37.030Z
Electron: 3.1.8
Chrome: 66.0.3359.181
Node.js: 10.2.0
V8: 6.6.346.32
OS: Windows_NT x64 10.0.17134

[CareyYang]

Can you also mention where in the world you are located geographically? I'm starting to suspect that there could be an issue in a particular region.

Thank you for your replay. I am a Chinese Developer.I'm in China now.I try it again after your replay. but the same thing happened.the screenshot of the my environment is:

My OS is the lasted version of windows 10 v1809.
I can get the same package any another way.so I think it's not the proplem of network.

[jmrog]

Thank you both for following up. I still suspect that this is a network problem, for a couple of reasons:

1. So far, all of the reports about this issue have come from users in China,
2. Users in China have had problems accessing NuGet package data in the past, and
3. I can't reproduce the issue at all (I'm not in China).

As a (partial) test, are you able to get to this URL from China: https://api.nuget.org/v3-flatcontainer/IdentityServer4/index.json ?

[CareyYang]

Thank you both for following up. I still suspect that this is a network problem, for a couple of reasons:

1. So far, all of the reports about this issue have come from users in China,
2. Users in China have had problems accessing NuGet package data in the past, and
3. I can't reproduce the issue at all (I'm not in China).

As a (partial) test, are you able to get to this URL from China: https://api.nuget.org/v3-flatcontainer/IdentityServer4/index.json ?

I am able to get to the Url in China,the screenshot is:

[jmrog]

Thank you both for following up. I still suspect that this is a network problem, for a couple of reasons:

1. So far, all of the reports about this issue have come from users in China,
2. Users in China have had problems accessing NuGet package data in the past, and
3. I can't reproduce the issue at all (I'm not in China).

As a (partial) test, are you able to get to this URL from China: https://api.nuget.org/v3-flatcontainer/IdentityServer4/index.json ?

I am able to get to the Url in China,the screenshot is:

I see. Notice that it redirected you to azure.cn. Apparently azure.cn does not have the correct information. What you should be seeing is this:

So, there appears to be a problem with the redirect or the server to which it is redirecting for users in China. That kind of problem is out of my control. Do you know whether there is some other URL that is accessible by Chinese users and that returns the version information shown in my screenshot?

[CareyYang]

Thank you for your replay again,But I haven't found the way to return the version information in China yet,if I get it,I tell you.

[CareyYang]

Thank you both for following up. I still suspect that this is a network problem, for a couple of reasons:

1. So far, all of the reports about this issue have come from users in China,
2. Users in China have had problems accessing NuGet package data in the past, and
3. I can't reproduce the issue at all (I'm not in China).

As a (partial) test, are you able to get to this URL from China: https://api.nuget.org/v3-flatcontainer/IdentityServer4/index.json ?

I am able to get to the Url in China,the screenshot is:

I see. Notice that it redirected you to azure.cn. Apparently azure.cn does not have the correct information. What you should be seeing is this:

So, there appears to be a problem with the redirect or the server to which it is redirecting for users in China. That kind of problem is out of my control. Do you know whether there is some other URL that is accessible by Chinese users and that returns the version information shown in my screenshot?

I found the method just now. the Url replace "https://api.nuget.org/v3-flatcontainer/IdentityServer4/index.json" whth "https://nuget.cdn.azure.cn/v3-flatcontainer/identityserver4/index.json ".All words are lowercase.this URL that is accessible by Chinese users and that returns the version information shown in your screenshot:

[jmrog]

Nice find. Thanks. I would say this is a bug in the server that is redirecting you to azure.cn. URL paths are case-sensitive, so a redirect should not change the case of anything in a URL path.

[likai3615560]

Nice find. Thanks. I would say this is a bug in the server that is redirecting you to azure.cn. URL paths are case-sensitive, so a redirect should not change the case of anything in a URL path.

how to fix this bug

[likai3615560]

Nice find. Thanks. I would say this is a bug in the server that is redirecting you to azure.cn. URL paths are case-sensitive, so a redirect should not change the case of anything in a URL path.

how to fix this bug

use vpn succeed

[maxpowercode]

if key word use lowercase letter ,the url callback success info,like this:
https://nuget.cdn.azure.cn/v3-flatcontainer/identityserver4/index.json