MS Teams is not working any more

Question

We know the classic MS Teams will out of support on 1 july 2025. But since 23 april the classic MS Teams is not supported anymore. We can only use MS Teams web at this moment. What is going on? How can I fix this?

This message is in dutch. Translation in Englisch:

Teams needs an update

Teams needs to be updated to ensure the most secure and reliable experience. Contact your app administrator to update.

Need access while you watch? Open the web version of Teams.

We are using at this moment:

Windows 10: 10.0.14393

MS Teams: 1.7.00.19353 (Release date 26 July 2024)