Cannot Authenticate my Server to Server app and get my first token

[gianni.zoom (Gianni)]

Hi @thierry ,

Ahh, try referring to this thread:

cURL:

Server-to-Server OAuth returns 400 when requesting access token - Powershell

Hi, @zoom123, Thank you for posting in the Developer Forum – I am happy to help. Sorry to hear that you getting 400 bad request. Can you try to make the request with the following curl command : curl --location --request POST 'https://zoom.us/oauth/token?grant_type=account_credentials&account_id={accountId}' \ --header 'Authorization: Basic Base64Encoder(clientId:clientSecret)' \ --data-raw '' Also, there is a helpful utility script to generate a Zoom Server-to-Server Oauth Token and copy it …

Powershell:

Server-to-Server OAuth returns 400 when requesting access token - Powershell

Some potential areas you may want to check: Use a single-byte encoding like ASCII or UTF-8. Encode using base64url encoding, which replaces certain characters and discards padding. Actually, my current Server-to-Server OAuth implementation is using base64 encoding; it was JWT that used base64url encoding. A .NET Framework / PowerShell compatible implementation for both of the above might be available via Microsoft.IdentityModel.Tokens.Base64UrlEncoder.Encode.