I am unable to install any extensions or code spaces on visual studio

Question

When I first open visual studio code, the output says this:

2023-12-25 18:24:28.042 [warning] Via 'product.json#extensionEnabledApiProposals' extension 'ms-python.python' wants API proposal 'registerIssueDataProvider' but that proposal DOES NOT EXIST. Likely, the proposal has been finalized (check 'vscode.d.ts') or was abandoned.

2023-12-25 18:24:28.642 [info] Started local extension host with pid 12688.

2023-12-25 18:24:31.323 [info] [perf] Render performance baseline is 82ms





When I go to extensions, and try to install python, an error message pops up: Error while installing 'Python' extension. Please check the [log](command:workbench.action.showWindowLog) for more details.

The log shows: 

2023-12-25 18:26:50.925 [error] Error: XHR failed

    at k.onerror (vscode-file://vscode-app/c:/Users/mtzbi/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:95:2027)

2023-12-25 18:26:50.977 [error] Error: XHR failed

    at k.onerror (vscode-file://vscode-app/c:/Users/mtzbi/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:95:2027)

2023-12-25 18:26:50.984 [error] XHR failed: Error: XHR failed

    at k.onerror (vscode-file://vscode-app/c:/Users/mtzbi/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:95:2027)





Also when I try to open Edx Harvard CS50 code space on VS code desktop, it says: "installing extension github code spaces", followed by XHR error. The log shows: 

2023-12-25 18:28:51.685 [error] XHR failed: Error: XHR failed

    at k.onerror (vscode-file://vscode-app/c:/Users/mtzbi/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:95:2027)




I have re-installed VS code multiple times, let it through my firewall, used "code --ignore-certificate-errors", made sure 'http proxy' is set up correctly, and tried all 4 options in proxy support. But noting is working. 

Answer 1

Thanks for posting your question in the Microsoft Q&A forum.
If the VS Code network connection wasn't blocked by a firewall/anti-virus, please check the install extension using the command line to bypass any UI-related issues during installation.

code --install-extension ms-python.python

Last but not least, Sometimes, issues can be related to corrupted user data. Try opening VS Code with a clean user data folder (delete or rename the old version).

** Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful **

Answer 2

I get the exact same error message.
When I disable the Windows Defender Firewall everything is OK, so it's got to be a rule in the Firewall.

I created a new firewall rule explicitly allowing all traffic for "vscode.exe" but the problem persists...

Error: XHR failed

    at k.onerror (vscode-file://vscode-app/c:/Users/mtzbi/AppData/Local/Programs/Microsoft%20VS%20Code/resources/app/out/vs/workbench/workbench.desktop.main.js:95:2027)

Answer 3

Performing all these steps, but nothing is working.