Exchange 2019 and unsearchable calendar items

Network_Master 11

Hey all,

I have a weird one

Server Environment is Exchange 2019 CU10 on prem with no hybrid links (Version 15.2 (Build 922.7))
Client environment is Outlook 2013 (15.0.5363.10000) Online mode, not cached.
Previously we were on Exchange 2013

5 users all have publishing rights to a Mailbox Calendar and create appointments on that calendar.
Not meetings but appointments.
Lets call the shared Mailbox Reception for simplicities sake

This all works fine and has for years. Starting when we upgraded to Exchange 2019 these users have had sporadic issues with newly created items.

A user (Lets say Sally) will create an appointment on the Reception Calendar
All 5 users can see that appointment, they can open it, they can interact with it
HOWEVER
They can't search for it and neither can the Reception user as themselves.
It also doesn't show in OWA.

If any of the users then opens the item, makes any change and saves it - it can be searched by all users.

Now this doesn't happen every time, it seems to be sporadic as to when it happens.
Last week 20 items were created - only 1 had this issue
The week before there were 30 items, again only 1 had the issue.

Different users created these items but. So there is no one user with the issue.

So its weird because it shows in Outlook, Exchange Get-CalendarDiagnosticLog shows the item being created - but searching doesn't work

There are no Plugins in use in outlook.
OWA shows the same issue
The mailbox has been moved to a different Database
Databases are on different servers

Has anyone else seen this?
My gut says more BigFunnel weirdness :/

Thanks

KyleXu-MSFT 26,206 Reputation points

2021-10-27T02:16:25.553+00:00

@Network_Master

5 users all have publishing rights to a Mailbox Calendar and create appointments on that calendar.

Do you mean those 5 mailboxes hosted on your Exchange 2019? If so, where is the calendar shared from? From external mailbox or a mailbox in your Exchange server? Then, I will check from my lab.
Network_Master 11 Reputation points

2021-10-27T11:19:14.587+00:00

All mailboxes in in Exchange 2019 on prem.
The calendar is shared from the "Reception" mailbox within the Exchange environment.

All 5 users -> Same Mailbox DB, Same email address, Same DAG.

It doesn't happen to every created item but, only some.

I haven't yet found the pattern
KyleXu-MSFT 26,206 Reputation points

2021-11-01T09:14:10.507+00:00

First, random problems are difficult to troubleshoot, and if this issue could be reproduced, it will be helpful for troubleshooting.

I would want to double confirm with you that how this calendar shared? "Publishing Editor permission" or "Publish Online":

if you use the "Publish Online" way, I would suggest you try with the "Publishing Editor permission".
If you use the "Publishing Editor permission", I would suggest you try to check from the cache mode, this phenomenon may caused by the network.
Network_Master 11 Reputation points

2021-11-02T00:24:41.673+00:00

Its done through the publishing editor permission
It is not done as publish online

The client and exchange server are on the same local LAN - so its not going to be network

One of my team actually found this post
https://learn.microsoft.com/en-us/answers/questions/208204/migrated-from-msdn-exchange-devexchange-2019-does.html

We can confirm we see the same problem with the Calendar entries as they do with forwarded emails - so i think my gut was right that this is a BigFunnel bug

Is there any MS Reps on here who i can chat to privately to share diag data? I can't publish it to a forum, but i can share privately if with MS
KyleXu-MSFT 26,206 Reputation points

2021-11-03T09:14:56.49+00:00

Whether is this phenomenon occurs on specific subject format? You could try with some regular title, such as "appointments-11/2", "appointments-11/3". Then search with "appointments".

About contact Microsoft, here are detailed information about it:
Global Customer service Phone number:
https://support.microsoft.com/en-us/topic/global-customer-service-phone-numbers-c0389ade-5640-e588-8b0e-28de8afeb3f2

If you have contract of paid support for on-premises Microsoft products and service, submit the ticket from this portal:
https://support.microsoft.com/en-us/gp/contactus81?audience=commercial
Network_Master 11 Reputation points

2021-11-07T21:21:48.863+00:00

We haven't yet narrowed it down to a cause

From the small sample size, i don't believe there is a pattern as yet - especially when compared the ones that are working that have the same format for the subject

Thanks for the links, we would be pay per incident, which I am trying to avoid (mainly for the time sink trying to explain all of this and gather data)