On the "First time setup" I'm getting "Error 400: invalid_request"

[AlonTzarafi]

This is what shows up:

[telotortium]

Sorry, I can't reproduce. Can you give me the URL (you can obfuscate the exact tokens in the URL)?

[Silver292]

I had this issue as well and managed to solve it by evaluating:

(concat org-gcal-auth-url
                      "?client_id=" (url-hexify-string org-gcal-client-id)
                      "&response_type=code"
                      "&redirect_uri=" (url-hexify-string "urn:ietf:wg:oauth:2.0:oob")
                      "&scope=" (url-hexify-string org-gcal-resource-url))

in a buffer and pasting the result in the browser.

This prompted me to sign in where I was met with a warning that the app had not been verified. By clicking Advanced and then Go to app-name (unsafe) I was able to get the code needed by gcal.

[dalvescb]

Having this same issue but @Silver292's solution does nothing for me. I'm running spacemacs inside of WSL2

[rosslaird]

Likewise (on Arch) -- however, when I use the same settings on a second machine, it works. This is after removing everything in the ~/.emacs.d/org-gcal directory (a few times) on the first machine, so I don't think the issue is in there. When I use the same settings on the other machine, I am re-prompted for the code, and then it works. Huh.

[BenedictHW]

@Silver292 Thank you for your solution. Worked for me. Spacemacs inside WSL2.

[telotortium]

Hmm, maybe you need to use different client IDs on each of your machines (which means you should generate separate credentials)?

[npit]

Having the same issue, on spacemacs + Arch. No mentioned solution works unfortunately.