In our ongoing commitment to enhance the security and control mechanisms of Exchange Web Services (EWS), we are announcing a significant change in the behavior of the EWSEnabled tenant-wide switch in...
Updated Feb 26, 2025
Version 2.0
Blog Post
Greg Taylor - EXCHANGE
Microsoft
MicrosoftHey Jim - sorry you got caught out by this - you should have had the Message Center posts too though, which are the official way we communicate changes like this. I know we send a lot of stuff there, but keeping an eye on that is really advisable.
Again, sorry for the outage, hope you got things going again before too long.
One question though - modern Teams clients don't use EWS to show the Exchange Online calendar. What's your configuration/versions if this truly was the issue? Are these on-prem mailboxes?
Hmm,I looked at service health and didn't see this one.
Exchange-online
Teams-online
This started last weekend (or a bit before) Org behavior is set to false which surprised me. Sadly L1 support has been most unhelpful on analysis so I'm essentially left to research on my own.
My plan is to turn the org default to true and see "if" that fixes it. If it does not I'm not a happy camper since I'm getting no help from MS support and your KB article seems to fit. I've made no changes to our environment and this (to me) came out of nowhere!
The issue shows up on locally installed Teams/Outlook and the portal.office.com (web versions) no change.
I'm still telling level 1 support CLOSE THE TICKET. I added some ,I've solved it independently of "your" support. Level 1 support (and I rarely say this quite so directly) in this instance was useless. They had zero idea of the EWS issue and troubleshooting consisted of workstation level steps. I mentioned "how about EWS" and got crickets chirping and continued "send support x,y,z info that I'd already sent them.
THIS WAS NOT communicated well. I went back through bulletins and found nothing. In other instances MS has sent us alerts saying "we still see X ON after specific date it won't work you might WANT to update your tenant setup.
Greg, if you're still here, thank you for your help but I'd vigorously disagree with you that this was communicated effectively.
- Greg Taylor - EXCHANGE
Yup, I'd say setting the org setting to True should do the trick for you. It must have been set to False in the past somehow, as that's not the default. Hope that works for you.
And just FYI, Service Health Dashboard is about outages, usually expected outages, the Message Center is more for messages about changes we're making. So keep an eye on that.
All the best
Hmmm, so far I made the change. true for the org
How long does it take to kickin. Right now it hasn't and needless to say my stress level is high.
12 hours-ish. It is working now. Now to see why we missed the bulletins. I'm going to amuse myself and send all the "I don't think they need it" info on my open ticket and see what cliffs they want me to drive off of.
Yes Greg, that was me trying be as nice as I can about L1 non premium support.
