Unable to log into Atlan via SSO due to an "internal error" from Microsoft Defender

If you are getting an error message from Microsoft Defender that the Atlan login page cannot be loaded, it's possible that the wrapping URL prefix - for example, _https://nam02.safelinks.protection.outlook.com/  - _ is causing the error. 

To get around this, you should add a Safe Links policy to whitelist Atlan's invitation emails and URLs. Otherwise, the Safe Links function will need to be turned off.