npm 安装出现问题... npm 错误！代码 E400

首先我安装了最新版本的 Angular cli。然后当我尝试降级到 7.3.3 时出现错误：400 Bad Request - GEThttps://github.com/。另外，我无法使用 npm install 安装任何东西，例如 node-sass 等。所以我卸载了 nodejs 并尝试再次安装 Angular cli，但出现了相同的错误。也许我改变了任何配置。

CMD

C:\Windows\system32>node -v
v12.17.0

C:\Windows\system32>npm install -g @angular/cli
npm ERR! code E400
npm ERR! 400 Bad Request - GET https://github.com/

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\XXXX\AppData\Roaming\npm-cache\_logs\2020-06-01T10_49_37_560Z-debug.log

Logs

0 info it worked if it ends with ok
1 verbose cli [
1 verbose cli   'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'install',
1 verbose cli   '-g',
1 verbose cli   '@angular/cli'
1 verbose cli ]
2 info using [email protected]
3 info using [email protected]
4 verbose npm-session bc2383db262e35f5
5 silly install loadCurrentTree
6 silly install readGlobalPackageData
7 http fetch GET 400 https://github.com/ 506ms
8 silly fetchPackageMetaData error for @angular/cli@latest 400 Bad Request - GET https://github.com/
9 timing stage:rollbackFailedOptional Completed in 1ms
10 timing stage:runTopLevelLifecycles Completed in 543ms
11 verbose stack Error: 400 Bad Request - GET https://github.com/
11 verbose stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\npm-registry-fetch\check-response.js:104:15
11 verbose stack     at processTicksAndRejections (internal/process/task_queues.js:97:5)
12 verbose statusCode 400
13 verbose pkgid @angular/cli@latest
14 verbose cwd C:\Windows\system32
15 verbose Windows_NT 10.0.17763
16 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "-g" "@angular/cli"
17 verbose node v12.17.0
18 verbose npm  v6.14.4
19 error code E400
20 error 400 Bad Request - GET https://github.com/
21 verbose exit [ 1, true ]

1.>转到您的此位置

C:\Users\{your user name or ID}

2.> 打开 .npmrc 并删除 .npmrc 文件中的所有内容。

3.>重新打开新的命令提示符

4.>再次运行代码，就可以了。