Windows 10, error 80240FFF

After spending most of yesterday downloading the Windows 10 Pro update to my Windows 7 Professional (x64) system, installation failed and appears to have been prevented by some corruption  as reported under error 80240FFF.

I have cleared the Update temporary files and it looks like a fresh update is in process of downloading at the moment - where do I go from here please?

 

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Last updated November 29, 2018 Views 5,089 Applies to:

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The Official Final Windows 10 download is now available

Use the download tool to create ISO media to update your windows.

(update in windows do not boot with a DVD or USB)

http://www.microsoft.com/en-us/software-download/windows10

Use Download Tool Now (32bit version)
http://go.microsoft.com/fwlink/?LinkId=616935

Use Download Tool Now (64bit version)
http://go.microsoft.com/fwlink/?LinkId=616936

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i have the same problem i did several efforts to fix it but the problem is i do not have my windows 8.1 pro key.

i have microsoft surface pro 3 and it dose not have the windows installation key label and as i upgrade the os from pro to media center edition i could not find out what is the original windows key in regedit.

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Thanks Max, the download links you provided solved everything and Windows 10 installed perfectly last night!  Thanks once again = Bob

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i have the same problem i did several efforts to fix it but the problem is i do not have my windows 8.1 pro key.

i have microsoft surface pro 3 and it dose not have the windows installation key label and as i upgrade the os from pro to media center edition i could not find out what is the original windows key in regedit.

Same problem here and my new asus does not have the windows 8 key so I'm afraid I would not be able to install that way?  How can I get that key or what are my other options?

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also I used Belarc Advisor to find my current Windows key.  It creates a profile summary and about halfway through the pages there is a list of all my product keys except Windows Pro 8.1. 

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but wouldn't it require product key?

PS - i have original Windows 8 which is now updated to 8.1 

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The Official Final Windows 10 download is now available

Use the download tool to create ISO media to update your windows.

(update in windows do not boot with a DVD or USB)

http://www.microsoft.com/en-us/software-download/windows10

Use Download Tool Now (32bit version)
http://go.microsoft.com/fwlink/?LinkId=616935

Use Download Tool Now (64bit version)
http://go.microsoft.com/fwlink/?LinkId=616936

I'm having the same problem, so I tried the 64 bit version for my 64bit Win7. All the media creator did was contemplate for a minute then in big letters say "Something happened" and then crashed. Never changes, no matter how I tweak and twiddle my windows settings (safe mode, shutting down virus checker and malware checker etc...etc...).

I'm on the verge of giving up on the whole thing as I'm beginning to see that the only way I'll ever get Win10 is when I buy a new PC. And my PC isn't that old... just mental.

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HI Heather, i also faced the same problem with media creation tool and it has a very simple solution, you can just go to control panel > clock, language and region then go to region and language and in all the sub tabs change your location and language etc to United States and then run media creation tool.  It worked for me. Heads up 👍

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I did what you told me to... no change. Still got the same error message. I give up now. Thanks for your help anyway. We tried. 

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Yahoo! I've found a solution that worked for me. Turns out my Registry was missing that certain something. Now downloading Win10 with no problems,

All I did was follow these instructions:

I'll make this as basic as possible in case anyone else trying this doesn't know how to get to regedit etc.

Also, before you do this MAKE SURE YOU HAVE ALL UPDATES INSTALLED AVAILABLE. This includes optional updates.

1) Click on Start, search for regedit.

2) With regedit open, proceed to the following path. Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\OSUpgrade

3) Right click on the right side window and go to New -> DWORD (32-bit) value. Do NOT touch the QWORD (64-bit) value. 

4) Rename the new value to "AllowOSUpgrade" without the " quotations and make sure it is exactly the same as it is case sensitive.

5) Double click on the newly created value AllowOSUpgrade and change the value to 1 with hexidecimal base.

6) Close regedit and run Windows Update again. Windows 10 should pop up and you can then download it.

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