Scheduling and managing events using Outlook.com calendar
Hi M A S,
To help isolate the issue further, I recommend testing with:
- A meeting invitation sent to your primary Outlook.com address
- The same invitation sent to the affected alias
- A regular email (non-calendar message) sent to the alias
You can also try temporarily setting the affected alias as the primary alias on the account and then retesting. If invitations still do not arrive anywhere in the mailbox, the issue is more likely related to Outlook.com's backend processing of mail sent to that alias.
Please let us know the outcome of the primary-address vs. alias-address test, as that will help narrow down whether this is an alias-specific delivery issue or a calendar-processing issue.