Why am I suddenly receiving spam calendar invitations/appointments in Outlook (Microsoft 365 Family).

Though my previous suggestions work, thanks to K Nicholas I'm happy to get a little understanding of the mechanism by which the annoyances show up.

I hadn't realized how they were getting in. Now I see that it's via an ics file. I never clicked on an attachment, yet the invites and appointments showed up and I never use Outlook. Must be a Windows thing.

To solve the problem until and if Microsoft wakes up, I recommend reassigning the .ics file type to something innocuous like notepad rather than to Outlook. Or to a batch file that simply deletes the file (del /y %1)

From the Start menu, type file t and select the suggested app. type ics in the search box and reassign.

I'm not seeing them in the junk folder. If there were there, I could delete them.

Adding to the list. Items are going to Junk folder as they should, but from even though they're flagged as Junk, it is still creating a calendar entry!

I am having the same issue. My wonder is microsoft is profitting from this somehow.

This sht needs to stop. I am NOT accepting anything and it automaticly goes in the calendar.

I found that if you go to the first day of the bogus event and delete it from there, then it goes away.

On your phone calendar, long tap the event and a tool bar will pop up. Click "Cut." That's it.

On your computer, you can click the event and Delete it.

Good luck!