Most of my staff complaining about not seeing their chat and conversation on their channels and this happened to me also. On Windows 10 Teams Desktop app, I post a important message on a channel few days ago that has 30+ users but that message is not visible now.
Its wired isn’t it? this been happening to most of the users all around world. I have seen so many complaints about it.
Follow the below steps to fix Microsoft teams chat disappeared 2021 issue:
You are not alone to face this issue in Teams actually this issues appears from the early 2018 but Still Microsoft hasn’t find a way to fix this.
To Fix chat not visible or disappearing issue in teams following the below recommended steps:
Solutions 1: Sign-out and Sign-in of Teams
This behavior is only found in the desktop App or Mobile App. If you are using Microsoft Teams in the web browser then you are likely not to receive this types of issues.
So, to fix this issues Sign-out of your Microsoft Teams desktop or Mobile App and Sign in again. Temporary this fill fix the missing chat conversations issues in Microsoft Teams.
Solutions 2: Check Teams in Web Browser
You are sure where is your chat is missing, if the above fix doesn’t help them login your Teams in any of the web browser by following this link https://teams.microsoft.com/ and visit the exact location.
Then again go to your desktop or mobile App, Bingo you will find the chat that was missing or not visible before.
For now, above is the two temporary fix for the Chat Disappearing issue in Teams.
Vote for Fix: Ask Microsoft to fix this Issue
I have found as a serious issue in Microsoft Teams, so many of my important chat thread disappeared few times.
Thankfully someone has already created a request to look for this issues, and the good thing is, this request is under review by Microsoft. If you are annoyed by this issues click the below vote Now button to Vote this request so, that Microsoft staff will give some preference to this issue.