Microsoft 365 Calendar Won't Sync with iPhone or Webmail

Thank you Dianne. Much appreciated.

Have a great day.

Barry

Sorry, I was out of the office. I'll check with my contacts and see what is going on.

Hi Dianne,

I sent you a response on 08/21st.

Are you going to respond?

Thanks

Barry Manovich

Calgary

***-***-****

Hi Dianne,

Thanks for your response.

Actually, it never broke again. The frustrating thing is that it's never been fixed. After the February update/communication from MS advising that the lost Exchange ActiveSync connection was restored. That version is where the bug or issue started.

Let’s start from the beginning.

In January we lost the Exchange ActiveSync connection as stated below.

The Workaround was to revert to Version 2312 Build 17126.20132 until the issue was fixed. As I have previously stated this version works totally fine. No issues that I can see.

This is a message from MS. on February 29th, advising users/customers that the issue was fixed in Version 2402 Build 17328.20068.

The connection was restored however, it is in this version where the calendar syncing issue started. So, one would think that the engineers can go back to Version 2312 Build 17126.20132 and compare it to subsequent updates to see where the issue is!!!

Outlook Desktop Exchange ActiveSync connections stopped working in Version 2401

Outlook for Microsoft 365

Last Updated: February 29, 2024

ISSUE

After updating to Version 2401 Build 17231.20182 Outlook stops connecting when using the Exchange ActiveSync (EAS) protocol.

STATUS: FIXED

This issue is fixed in Outlook Desktop Version 2402 Build 17328.20068 and higher. To install the update right away select File > Office Account > Update Options > Update Now.

A few weeks ago I did another test after allowing the latest update (August 2024) to download.

I created 3 tests as follows.

1. Test #01 – Created a calendar event using my iPhone. No issues. The event appeared on MS365 and my Webmail.
2. Test #02 – Created a calendar event on MS365. The event appears on MS365, however, not on my iPhone or Webmail.
3. Test #03 – Created a calendar event on Webmail. The event appears on MS36 and iPhone.

I've been working with a contact on the business side of MS. This individual prepared a business case with all of the information I provided, such as screenshots, etc. However, prior to submitting the case for further review I advised him that my subscription is a Family MS 365. He then advised me to once again contact the personal/home side. So the frustration continues, as I along with other MS user/customers are continuing to experience the same thing.

I've been in touch with the home side of MS at least 4-5 times since February 2024. The folks that I have communicated with seem to understand the issue, tell me they will take it forward and I never hear from them again. When I follow up on the case no., I'm advised that the ticket has been closed. That is so frustrating!

Perhaps you are able to put me in contact with someone on the home side who I can speak directly to.

Thanks for your assistance.

Barry Manovich

Hi Dianne,

Good to hear from you again. I’m connected via a Family MS 365 subscription. Shaw is my email provider and I’m connected using Exchange ActiveSync.

You helped me revert back to a previous version which is the only one that still works perfectly with email, calendars, contacts and tasks.

I’ve been trying to get the issue resolved for 7 months.

Very frustrated!

Barry

Ok - you're using the Shaw account with EAS - so it sounds like it broke again. In which case, you need to rollback to 2401 Build 17231.20182 (or the most recent version when it still worked).

Type cmd on the Start screen to find the Command Prompt then right click on it and choose Run as Administrator. Paste this line in the command prompt window.

"C:\Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.17231.20182

Uninstall Updates in Office 'Click to Run' (slipstick.com)