I have purchased at Toshiba laptop including win8.
After release, I installed win 8.1 easily, following common procedure. It worked perfectly and I was quite happy with it.
Due to some hardware issues, I turned the laptop in for repair.
The motherboard was replaced with a new one, and win 8 was reinstalled when I got the laptop back.
Obviously, I wanted to update to 8.1 once again.
This is where all my problems started.
Apparently the update is being installed, but at 95% of the install process done, it stops and reinstall win8 again.
The error codes oxc1900101 - ox30018 are displayed on the screen.
I have now spent months reading on that same problem online, and tried a lot the proposed solution, but with no luck.
I found many many people who had trouble updating, so clearly, there IS a problem with win 8.1
I have called Microsoft support, who said that Toshiba was responsible.
Toshiba says to contact Microsoft...
Microsoft wants me to pay 99$ for support, so they will fix it.
But it is supposed to be a FREE and very easy update - why would I pay for that?
I have tried to update drivers, clean start, reinstalled win8 a lot of times, uninstalled anti virus and anti malware, went into bios and disabled usb3, used lan cable instead of wi-fi and many more things, but the same error code still appears every time.
I really hope someone can help me - PLEASE PLEASE!
I don't think it is fair, that I have to buy a new license for win8.1