Microsoft Teams – The application database has been wiped. this tab must be refreshed or be closed

Today when i logged into my development tenant’s teams I got the following message:

The application database has been wiped. this tab must be refreshed or be closed

This looks scary. Well I only have one button to click. After a login i got to the following:

I’ve not noticed anything missing but the warning given doesn’t make me comfortable.

So what caused this error message. It took me a few weeks before I reproduced the error.

The following steps will cause this error:

• Open Microsoft Teams in your browser.
• Open Microsoft Teams in another tab.
• Log out of Microsoft Teams in one tab, the other tab now gives the error.

Pieter Veenstra

Is your business still running on paper trails, sprawling Excel files, or ageing Access databases? There's a better way — and I can show you exactly what it looks like. I'm the Technical Director of Vantage 365, a Microsoft solutions consultancy working with clients across the UK, the Netherlands, and worldwide. For over 30 years I've been turning messy, manual business processes into clean, automated systems that save time, reduce errors, and give teams the visibility they need to make better decisions. You can contact me using contact@sharepains.com