Hello @anon29087526 welcome to the Asana Community Forum!
If you are working in a team do other colleagues face the same problem?
And you or your admin have whitelisted the Asana add-in for your domain?
If nothing helps then I recommend contacting the support team as they will be in a better position to trouble this further with you!
When contacting them ideally with this info:
- Screenshot of the error message
- Version of Outlook that you have
- If you have tried uninstalling and reinstalling?
- Outlook email address