@MikhailDV - Hi I did a bit of searching too and found this Gabe Aul blog post: http://blogs.windows.com/bloggingwindows/2015/06/19/upcoming-changes-to-windows-10-insider-preview-builds/
It seems to contain an official answer to the question of whether you can upgrade from a Genuine 7/8.1 Installation to Windows 10 Preview, then onto Windows 10 RTM and then exit the Insider program.
I imagine that because you were able to upgrade 8.1 to Windows 10 preview without encountering the SVGA problem, that it should be straightforward to upgrade to the RTM when it's released.
However, I'd like some official confirmation, for those who want to try and get an early upgrade to Windows 10 for their existing 7/8.1 VMs.
(As for me, I think I'm going to wait until Windows 10 gets officially released).
Pbryanw - Thanks for the link, although now I need to figure out how to ensure I have the W10 RTM and exit the Insider program (after the 29th), as I'm just a member so that I can hedge my bets.
By the way, it seems that someone nervous about doing this could always backup their VM disk files prior to the insider preview upgrade. If things didn't work out for whatever reason, just copy the backups back.
Thanks for your reply. I think I might do as you suggested - backup my VM then upgrade to the Windows 10 preview. Like you say, if things don't work out, I can always restore the backup.
My experience of the Windows 10 preview, in a separate VM, with a clean install suggests it's stable enough and close enough to the finished version now. So, again, thanks for the tip.
(Edit: Windows 10 isn't showing up in Windows update after running the Preview exe on 8.1. Might be something to do with Microsoft suspending Windows Insider builds as it gets ready for Windows 10 launch?)
I would think that reserving a free upgrade is preregistering for a license as much as it is downloading the upgrade in the background.
I was able to get a reservation for Windows 10 from within my Windows 8.1 virtual machine (running on OS X 10.10.4). It's when I run the compatibility checker for upgrading that I get the "SVGA 3D driver" message as everyone has reported.
I got a reply from VMWare about this that they have communicated the problem to Microsoft and are waiting to hear back from them.
All this seems to confirm what @dariusd has written.
Not urgent for me to install Win 10, so I'll watch out for what gets done to resolve this issue, either by Microsoft or by VMWare/Fusion.
Can someone from VMWare please give an update on this? I just tried from Windows-7 running in updated Fusion in updated 10.10.4. Hope it gets fixed in the next couple of weeks before Win-10 is released.
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If all people are interested in is to reserve the Windows 10 upgrade from within Windows 7, all you need to do is to delete the contents (only the files) within C:\Windows\AppCompat\Appraiser. That deletes the compatibility check results, and then the Windows 10 reservation tool allows you to enter your email address to reserve a Windows 10 copy. These files are not deleted when you uninstall the updates which form the Win10 upgrade tools, which is why uninstalling/reinstalling them does not fix the vmware vga driver issue. Maybe copy the files away instead of deleting them, and then copy them back again after reserving your Win10 copy, since I do not know what other effects removing the files might have. Alternatively, if all which was problematic on the original compatibility check was the vmware vga driver which we KNOW actually works in Windows 10, copy the files from a machine which passed the check. Note: you might have to take ownership of the folders to delete the files. Disclaimer: try this workaround at your own risk.
I followed jbm2015's advice, deleting 100% of the files but leaving the directories and was able to make a reservation for an upgrade to upgrade from 8.1 (versus 7). It will be interesting to see if the compatibility checker gets run between now and the upgrade to Windows 10 and in the process disqualifies the VM's upgrade.
Thank you for confirming jbm2015's advice David_K. Hopefully this will let VM Fusion users reserve a copy if they want to, while the SVGA problem is sorted out. In the end, I made a Windows 10 USB drive using an iso and Rufus then upgraded my 8.1 VM using the flash drive. As the VM is not work critical and doesn't hold any important documents I felt I could go ahead (making a copy of the VM just in case) without any concerns. The upgrade went fine, and afterwards I removed the Install from the Insider Preview program - I'm hoping 10240 will be the RTM version.
From the official FAQ that came out yesterday (Windows 10 FAQ & Tips - Microsoft), it states that you need to make a separate reservation for each system that you want to upgrade. Still not sure how we will upgrade existing VM's if we can't make the reservation.
The link seems to be acting flaky, the site might be overloaded.
Someone (Microsoft or VMware) give jbm2015 some cash kudos! Works like a charm.
I got hold of a RTM version of win 10 and upgraded 8.1 fine and stayed authorized, but the display resolution is stuck at very low numbers no matter what I try or what driver I try to use. It was fine under 8.1 so I don't know what the trouble here is but I reverted to 8.1 since it was unusable at low res.
@grdh20, Not sure what is going on for you, but I am pretty sure the preview is at RTM version or higher now and it is running in fusion for me at max resolution on dual monitors.
Its a 5K imac so it is probably not reading the display right for whatever reason even though it does in 8.1. It insists it's a 27" Acer monitor of some sort. I even tried catalyst beta drivers, but they don't even register. (I guess cause it's a virtual install and Vmware assigns the driver?) Maybe something that VMWare could check in to? I think this will require new Apple bootcamp driver packages as well.
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I got the same error message.
Im running: VMware Fusion 6.06, Windows 8.1 and OSX 10.11 beta 4 as host.
This worked for me:
1. Close the "Get Windows 10" application.
2. Delete the file: C:\Windows\AppCompat\Appraiser\Telemetry\Appriser.JSON (this file contains all errors that prevent a Windows 10 upgrade (VMware SVGA 3D graphics adapter was my problem))
3. Start the "Get Windows 10" application
Then I did not have any problem reserving a Windows 10 license.
Just got an email from Microsoft: "Congratulations on reserving Windows 10".
Disclaimer: I do not know if I will run into a problem later, or if this works for you, but it looks like it worked for me .