Unfortunately, this is a know issue at this moment.
You can try the methods provided by the links below or wait when the fix has been released.
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I kept trying to get windows 10 version 2004 up and running on my laptop but i keep having the same issue saying " This pc can"t be upgraded "
It all started when i had windows 10 home version and i tried to install version 2004 but failed heard my problem was that i needed the pro version of windows so i got the key and activate it ( didn't get any updates when activated because i got stuck on windows 10 version 2004 update)
i don't know if it is possible to get it fixed without the need to reinstall windows 10 because i tried a lot of methods from diffraction forums / videos and none of them worked
Unfortunately, this is a know issue at this moment.
You can try the methods provided by the links below or wait when the fix has been released.
Welcome to Microsoft Q&A Platform.
It seems to be a known issue, the most effective method now should be in-place upgrade by an iso image.
Try to download media creation tool from Microsoft website by click Download tool now button
https://www.microsoft.com/en-us/software-download/windows10
Next, choose ISO file option in Windows 10 setup interface. After iso file download complete, do the following steps:
Once you update to 2004 version, change the product key and enter the 25-character Windows 10 Pro product key.
Hello,
You don't need to change your edition to install feature update.
I recommend you to upgrade to V2004 via ISO file.
Refer this step-by-step guide:
https://www.kapilarya.com/how-to-upgrade-to-windows-10-using-iso-file
Let us know if this helps!
Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.
I had similar problems after replacing a faulty hard drive.
The game changer was a thread that suggested using the System File Checker (SFC) utility on www.800error.com . "This handy in-built tool will check your file system.
Come back to the black window after a time and check if the process finished.
As soon as the SFC process finished, restart your computer. After the restart you search for Updates again."
SFC came up with a lot of fragmented files, presumably arising from the old hard disc and the files persisting. The message was that the files had all been repaired.
When I tried to update, progress sailed past where it had stopped before with error 0x80029c4a. However it did fail with error 0x80070005, a permissions error. But, when I did the last step and restarted the PC I was gratified that it sailed through the update.
If only I'd been aware of SFC when I was trying to get going again after replacing my faulty hard drive when I had to reinstall previous version of Windows 10 from an ISO file - could have saved time then too!