Installing and upgrading Windows 10 using ISO files has its own importance, other options apart. ISO files can be used to repair an upgrade, to clean install, or for edition upgrade. And as for the repair upgrade and edition upgrade, users have reported an issue where the setup seems to be fine at first but after the part where the “We’re getting some things ready” message is displayed, they get the following error instead:
“Setup has failed to validate the product key”
If you are one of the users who is currently getting this error, you cannot do anything at this point but to do a clean install although you could also restart your system with its original settings once again. In addition, once you restart the system, you can try out the following preliminary checks.
Option 1 – Check if the latest Windows Updates are installed in the system.
Option 2 – Try running the SFC or System File Checker scan as it could detect and automatically repair damaged system files. SFC is a built-in command utility which helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files. To run the SFC command, follow the steps given below.
⦁ Tap Win + R to launch Run.
⦁ Type in cmd in the field and tap Enter.
⦁ After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:
⦁ Windows Resource Protection did not find any integrity violations.
⦁ Windows Resource Protection found corrupt files and successfully repaired them.
⦁ Windows Resource Protection found corrupt files but was unable to fix some of them.
Option 3 – Try deleting the temporary files in your computer.
⦁ Tap the Win + R keys to open the Run dialog box.
⦁ Then type in “temp” and press Enter or click OK to open the Temporary files window.
⦁ From there, delete all temporary files then repeat the first step then type in “%temp%” and delete all the files there.
⦁ Once again, repeat step 1 and type in “prefetch” and delete all the files there.
Option 4 – Try using Windows Update instead of ISO. This option is applicable if it is for the edition upgrade so instead of using ISO, you can just use Windows Upgrade.
Option 5 – For domain-joined systems, you can try temporarily removing them from the domain.
Option 6 – Get rid of all the third party antivirus programs installed in your computer for the meantime so that you can isolate the possibility that these programs are the ones causing the issue.
If none of the options given worked well, you can try a fix that involves a one-click solution known as [product-name]. This program is a useful tool that could repair corrupted registries and optimize your PC’s overall performance. Aside from that, it also cleans out your computer for any junk or corrupted files that help you eliminate any unwanted files from your system. This is basically a solution that’s within your grasp with just a click. It’s easy to use as it is user-friendly. For a complete set of instructions for downloading and using it, refer to the steps below.
Perform a full system scan using [product-code]. To do so, follow these steps:
⦁ Turn on your computer. If it’s already on, you have to reboot it.
⦁ After that, the BIOS screen will be displayed, but if Windows pops up instead, reboot your computer and try again. Once you’re on the BIOS screen, repeat pressing F8, by doing so the Advanced Option shows up.

⦁ To navigate the Advanced Option use the arrow keys and select Safe Mode with Networking then hit Enter.
⦁ Windows will now load the Safe Mode with Networking.
⦁ Press and hold both R key and Windows key.

⦁ If done correctly, the Windows Run Box will show up.
⦁ Type in the URL address, [product-url] in the Run dialog box and then tap Enter or click OK.
⦁ After that, it will download the program. Wait for the download to finish and then open the launcher to install the program.
⦁ Once the installation process is completed, run [product-code] to perform a full system scan.
⦁ After the scan is completed click the “Fix, Clean & Optimize Now” button.

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