This is fake news, there's nothing in the mainstream media or news source about this. If this is really new and valid breaking news, then please post a credible link, not some random YouTube video.
But can you still walk in through the front door?
What?
Germany has not issued a total nation ban on windows. Some states may have issues.
How many German states left to go?
There’s no official information about that. Schleswig Holstein is the only state that has committed to switch all of its government computers to Linux and open-source tools rather than windows. Some states, such as Mecklenburg Vorpommern and Bavaria are turning to open-source tools or canceling some contracts, but 15 other federal states have not yet imposed a total ban.