The 403 error means your Microsoft 365 account doesn’t have proper permissions to connect with UiPath. This is usually a permissions problem, not a technical issue.
What’s happening is your account isn’t added to the right user groups, or your IT team hasn’t given the necessary permissions to UiPath. You’ll need to talk to your IT admin to fix this.
Can you please check these as well?
Are you using your company email or personal email? If it’s company email, does it have Azure Active Directory access? Also, has your IT team given permissions like User.Read, Mail.Read etc. to UiPath in your Microsoft setup?
Is this happening for the first time, and which UiPath activities are you using - the new ones or old ones? Just check with your IT folks about these permissions and tell me what they say.