How to fix [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1000)

Question

I am trying to use Microsoft Graph API to access outlook mail to develop a program which will monitor the mailbox.While trying to implement the sample code outlined below -

https://learn.microsoft.com/en-us/graph/tutorials/python?tabs=aad&tutorial-step=2

I am encountering the following error - azure.core.exceptions.ClientAuthenticationError: Authentication failed: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1000)

I have tried -

1. installing certifi
2. upgrading certifi
3. installing certifi_win32
4. installing certificates
5. disabling expired certificated
6. using verify=False which is not recommended, but still this error comes up after a point
7. setting REQUESTS_CA_BUNDLE env variable to force requests library to use the cacert.pem
8. Adding the intermediate cert to the cacert.pem

Nothing seems to work. I am using Windows and trying to run the python scripts on command prompt.