Microsoft 365 Calendar Won't Sync with iPhone or Webmail Using Exchange ActiveSync

Question

Microsoft 365 Calendar Won't Sync with iPhone or Webmail Using Exchange ActiveSync

Barry Manovich 0

Following is the Issue

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.

The EAS connection was restored in the above fix. However, it’s in this version 2402 (Build 17328.20068) where the MS 365 calendar syncing issue started.

The 2402 (Build 17328.20068) update created another issue. One would think that the backend engineers can go back to Version 2312 (Build 17126.20132) and compare it to subsequent updates to see where the issue is. It just seems so simple for them the check it out.

Version 2312 (Build 17126.20132) works just fine. No sync issues. The issue is with subsequent updates starting with Version 2402 (Build 17328.20068). As a result I have stopped getting updates on my subscription until the issue is resolved.

On occasion I would check to see if a fix has been put in place, but that has not happened to date. After checking, I would have to revert back to Version 2312. One would think after 9 months, MS would have fixed it already.

Please let me explain exactly what the issue is.

If I make a calendar entry on webmail, it shows up on webmail, iPhone and MS 365 Outlook Calendar.
If I make a calendar entry on iPhone, it shows up on webmail, iPhone and MS 365 Outlook Calendar.
If I make a calendar entry on MS 365 Calendar the entry will NOT show up on webmail and iPhone, but will show up on MS 365 Outlook Calendar.

So, it's only when an entry is made through my MS 365 Outlook calendar is where the issue is.

Many other MS customers over the last nine months have commented on the community post I made, that I are experiencing the same issue.

I also have screenshots to illustrate the issue.

I've been trying to get MS to resolve this issue for NINE months.

Please HELP.

Barry

1-403-863-1139

1 answer

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Answer 1

Anonymous

Hi, @Barry Manovich

It sounds like calendar sync issues are really only present in MS365 Outlook.

Unfortunately, as a public platform, we don't have enough permissions to compare versions.

So I'll provide some general workarounds about calendar syncing:

Regularly keep an eye on the latest updates to see if they get a permanent fix.
In the Outlook, go to the Calendar pane, right-click on the calendar folder, select Properties, and select Clear Offline Items. This will resynchronise the calendar with the server project.
Delete the email account from Outlook and add it again.
Contact phone support to get a more in-depth investigation. Customer service phone numbers - Microsoft Support

The general approach to this problem is mentioned in the following cases for your reference.

Outlook 365 Calendar will not sync with mobile devices - Microsoft Community

Calendar appointments in Outlook won't sync and show with Iphone? - Mobile Computing - Spiceworks Community

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Anonymous

2024-10-23T09:40:50.5+00:00

Hi, @Barry Manovich

Just circling back to check to see how things are going on with this thread. Should you need more help on this, you can feel free to post back.
Barry Manovich 0 Reputation points

2024-10-23T18:35:18.5033333+00:00

Hi Xinto,

Thanks for reaching out. Much appreciated!The sync issue is only with the MS365 Outlook calendar. And only when I make a calendar entry using the Outlook calendar. My entry will appear in the MS365 Outlook calendar, however, my entry will not sync with Webmail or my iPhone. But, if I make a calendar entry using Webmail or my iPhone, my calendar entry will sync to the MS365 calendar.

I allowed the latest MS365 update to download yesterday and determined that the issue still exists. Sad to say! ☹

I reverted back to Version 2312 (Build 17126.20132) which works just fine. No sync issues.

The issue is with subsequent updates starting with Version 2402 (Build 17328.20068).

Because this is a public platform can you please direct me on how I can reach out to MS Management? Over the last nine months, I've been indirect contact with MS. They seem to understand the issue, say they will get back to me, but NEVER do. Disappointing!
Anonymous

2024-10-24T02:22:51.7133333+00:00

Hi, @Barry Manovich

Understands very well how frustrating this is. In order not to affect your normal use, you can keep version 2312.

At the same time, you can call technical support to follow up on your problem and record detailed details of the problem. This may be an internal backend issue and troubleshooting may take a while, thank you for your patience and understanding.

Customer service phone numbers - Microsoft Support

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Barry Manovich 0 Reputation points

2024-10-24T02:55:57.9733333+00:00

Thank you very much for your response. I do appreciate it.

I have gone down this road before, however, I must say without success. They seem to understand the issue, say they will check it out and get back to me. But, they never do. When I go back and check the status of the ticket, it's marked as resolved. ☹

I will try this route again and will advise you how I make out.

In the mean time, would you please consider if there is a specific individual at Microsoft I can speak to directly.

Thanks again Xintao.

Barry
Anonymous

2024-10-24T07:48:49.15+00:00

I am sorry Barry, but the most efficient and fastest way to do this is to contact technical support by phone. It is not yet possible to provide a specific individual who we can speak to directly.

Thank you for your understanding and support!

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Barry Manovich 0 Reputation points

2024-10-24T15:48:36.5533333+00:00

Thanks Xintoa. Really appreciate your assistance/support.

I'll give it a go and let you know how I make out.

Have a great day.

Barry
Barry Manovich 0 Reputation points

2024-10-24T20:43:12.72+00:00

Hi Xintoa,

Hope your day is going well.

I thought I would update you on my communication with MS today.

I phoned the number you provided and was able to get to the "voice prompt" which asked what support I required, to which I responded MS365 Outlook Exchange ActiveSync issues. I was advised that technical support for that issue is only available on-line.

I then went on-line and requested a return call. I did receive a call back which provided me with an opportunity to outline the calendar sync issue. I was advised that the Commercial side of MS handles Exchange ActiveSync, so the caller felt it would be best that I speak to them. I agreed so he transferred my call, unfortunately to the sales department so I had to be transferred again.

I waited for approximately 20 minutes for someone to pick up. The call ended with a message that my call had failed.

So, here's another example of why I'm so frustrated with MS.

I'm not sure what my next steps are. 😐

Perhaps you have a suggestion.
Anonymous

2024-10-25T08:48:01.1333333+00:00

Hi, @Barry Manovich

What a terrible experience!

Don't worry, I'll keep an eye on this thread.

1.If you are an administrator of your organization, you can select "Help & Support" in the bottom right corner of the Admin Center.

Once you've briefly described your problem, select "Contact Support" and follow the prompts.

2.Try this latest article Find Microsoft 365 for business support phone numbers by country or region - Microsoft 365 admin | Microsoft Learn

Please note the hours of technical support for your region.

If you have other questions, you can feel free to comment and I will answer them on the next business day.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Barry Manovich 0 Reputation points

2024-10-25T16:13:20.1666667+00:00

Thanks for your feedback Xintao.

I will give it a try first thing next week and will let you know how I make out.

Have a great weekend.

Thanks so much for your support.

Barry
Anonymous

2024-11-04T01:28:07.83+00:00

Hi, Barry

Just circling back to check to see how things are going on with this thread. Should you need more help on this, you can feel free to post back.

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Barry Manovich 0 Reputation points

2024-11-04T01:46:12.02+00:00

Hi there. Great to hear from you. Thanks for reaching out. Much appreciated. I’ll provide you with a response tomorrow. I have not made any progress to date. Waiting for a response from a Consumer Advocate at MS.
Barry Manovich 0 Reputation points

2024-11-04T17:12:59.8933333+00:00

Hi Xintoa,

Hope your day is good. Thanks again for reaching out yesterday.

So, here is where I'm at.

Last Thursday (October 31st), I spent over an hour using live-chat with MS Support.

The individual was very knowledgeable and clearly understood the issue. I allowed remote access to my system and she was able to duplicate the issue by making a calendar entry using MS 365/Outlook and it didn't show up on webmail. She agreed to take the issue forward.

She stated that doesn't matter if my subscription is personal or business, I'm suppose to get support to resolve the issue. The ticket no. is 7056213182. However, I see this morning that is marked "Closed" so I don't actually know what that means?

Later that day I received an email from Faith a Microsoft 365 Consumer Advocate. I wasn't able to communicate with her at that time. She sent me a second email, just a few minutes later and advised since she had not heard back from me, my case was archived. I responded by advising her NOT to archive my case as I did need assistance and would send her details and screenshots of the issue.

I emailed her on Friday morning with all of the details and have not heard a peep from her. I did asked her to acknowledge receipt of my email.

Is there anything you can do from your end to give someone a nudge?

Appreciate your assistance.

Best Regards

Barry
Anonymous

2024-11-06T05:57:51.7666667+00:00

Hi, @Barry Manovich

It is a pity to hear such a result.

I am sorry Barry, but I cannot query the specific information based on the ticket number you provided due to permission restrictions, which is beyond my permission.

At the same time, due to organizational constraints, I was unable to contact the MS support with whom you were communicating.

I am sorry for my powerlessness.

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Microsoft 365 Calendar Won't Sync with iPhone or Webmail Using Exchange ActiveSync

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