Microsoft Warns Windows 10 Has An Expensive Problem [Updated]

Windows 10’s problems are growing. Despite the introduction of new monthly charges, the number of high-profile incidents with recent updates (including one that deletes users’ personal data) is off the charts. And now Microsoft MSFT +2.29%

Update: November 10th – Microsoft has now officially confirmed the issue to me and stated it hopes to start rolling out a fix over the next 24 hours. 

Spotted by The Register, Microsoft’s activation servers have started accidentally downgrading expensive Windows 10 Pro systems into cheaper Windows 10 Home PCs, then invalidating their licences. Needless to say, that’s a nasty financial hit (Home is $119, Pro is $199), and affected users are furious.

Windows 10 is causing serious new problemsMicrosoft

“After updating to Insider Build 18277 my Windows 10 digital license became invalid. I don’t understand! … No hardware changes, nothing has changed. I don’t know what to do,” tweeted one affected user.

“One of our three-year-old Lenovo Yogas just decided to throw 0xC004C003 Windows activation error. Windows diagnostic tool says the machine has Windows 10 Home license … Dumbasses” tweeted another.

And it’s not just upgraders being affected. Problems with automated Windows 10 Home downgrades are being reported with fresh installs on different Windows Pro versions as well.