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I need to upgrade to windows 8.1 (from Windows 8), but when I use the windows store to upgrade I get error "application wasn't installed", and error code 80070002.

I am dual-booting with Linux (Debian stable), using default GRUB bootloader, but have marked the windows partition as "Active" as per the advice at Windows 8.1 install error 0x80070002. (also as per there, I tried clearing the windows store cache and deleting C:\Windows\SoftwareDistribution\Download)

According to disk management, my primary hard drive has

  • 350 MB NTFS system reserved (Healthy, system, primary partition)
  • C: 92.53 GB NTFS (Healthy, Boot, Page file, active, crash dump, primary partition)
  • 25.52 GB (this is primary linux partition)
  • 862 MB (my linux swap partition)

And I wonder if this unconventional partition structure might be the problem (I don't actually know that the first 350 MB partition is).

Otherwise, I'm totally out of ideas. Any ideas what the problem might be?

EDIT ANSWERED: See comments: Thanks to magicandre1981 for "disable grub, use win bootloader to update to 8.1, install all updates, enable GRUB again."

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  • disable grub, use win bootloader to update to 8.1, install all updates, enable GRUB again.
    – magicandre1981
    Commented May 14, 2017 at 7:11
  • Thanks for that magicandre1981! I made a startup repair disc, then using it I installed windows bootloader over GRUB following quora.com/… (needed three recovery commands: bootrec /fixmbr, bootrec /fixboot, bootrec /rebuildos), and then I had to clear the windows store cache again (wsreset run as administrator), and then the windows 8.1 update worked. Thanks so much, I was afraid no-one would answer, and I had already started preparing a windows 8.1 clean install, but you've saved me some hassle.
    – user8007762
    Commented May 14, 2017 at 10:41
  • ok, nice to hear that it works. enjoy the working 8.1
    – magicandre1981
    Commented May 14, 2017 at 19:11

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