Guest Additions breaks Windows 10 guest

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Guest Additions breaks Windows 10 guest

Postby onemojofilter » 21. Nov 2017, 00:10

Am running Fedora 26.
VirtualBox Version 5.2.0 r118431 (Qt5.7.1)
I installed VBoxGuestAdditions_5.2.1-118918.iso as recommended on the Virtualbox wiki.

Without Guest Additions Windows 10 installation works fine. With Guest Additions installed it goes into Auto Repair and fails to fix itself.

This is also true if I revert down to Virtualbox 5.1

I should add that nothing apparently fixes this. I've tried running these commands from the DOS prompt in the Windows guest:
bootrec /fixMBR
bootrec /Fixboot
bootrec /rebuildBCD

...to no avail.


Is the only way to avoid this to not use Guest Additions? I am only able to have my Windows guest fill to the current screen resolution with Guest Additions installed. It is a minor inconvenience but would be nice to have this addressed/fixed. Let me know if I've left out any vital info.

Thanks
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Re: Guest Additions breaks Windows 10 guest

Postby socratis » 22. Nov 2017, 02:38

Moving to "Windows Guests" from "Windows Hosts". You actually have a Linux host.
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Re: Guest Additions breaks Windows 10 guest

Postby onemojofilter » 22. Nov 2017, 02:41

Now you can close it because I figured it out. As long as at least 2D acceleration is checked on "Display" it will work without fail. Apparently I've read 3D acceleration also messes with the functionality of a Windows VM but I had neither checked and the box would invariably come up for Auto Repair and then fail.
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Re: Guest Additions breaks Windows 10 guest

Postby socratis » 22. Nov 2017, 03:30

I can start my Win VMs with 2D/3D enabled or disabled. Any combination. So, I'm not sure that this is the solution...
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Re: Guest Additions breaks Windows 10 guest

Postby onemojofilter » 22. Nov 2017, 04:29

Ok well it was for me.

And you have Fedora 26 and you installed Guest additions as well?
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Re: Guest Additions breaks Windows 10 guest

Postby socratis » 22. Nov 2017, 05:00

The host doesn't matter for the behavior you're describing. Is this thing repeatable?
If you obfuscate any information requested, I will obfuscate my response. These are virtual UUIDs, not real ones.
Do NOT reply with the "QUOTE" button, please use the "POST REPLY", at the bottom of the form.
socratis
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Posts: 12679
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Re: Guest Additions breaks Windows 10 guest

Postby onemojofilter » 22. Nov 2017, 05:07

Absolutely. The only thing that prevents it for me is to enable 2D acceleration.
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