I have tried to install the Windows 10 upgrade via the instructions http://kb.parallels.com/en/122884 but it fails everytime. I get the following message when it goes to reboot: We couldn't install Windows 10 We've set your PC back to the way it was right before you started installing Windows 10 0xC1900101- 0x20017 The installation failed in the SAFE_OS phase with an error during BOOT operation help please.
Same problem here and I have followed (I think )all of the random forum advice given 1) 4gb memory 2) 22gb free disk 3) Changed from SATA 0:1 to IDE 0:1 4) Windows 8 is up to date 5) No virus protection installed Followed all posted instructions. Parallels can you help? I upgraded and gave you money specifically to get Win10 because you told me I needed to so I could get Win 10 but now your software won't let me install Win10. Please help References: http://kb.parallels.com/122884 https://forum.parallels.com/threads/win-10-upgrade-install-failure.329098/#post-776442 https://forum.parallels.com/threads...ssues-with-coherence-mode.330652/#post-782712
Hello, could you please share a bit more details with us? Your Parallels Desktop and macOS version, when does the issue reoccurs, did you get any error message?