Error 0x80070057 to activate Windows 10

I just tried but it doesn't work.

Hello,

Before you begin, you need to have your Windows 10 product key.
You can retrieve it here: https://www.malekal.com/recuperer-cle-produit-de-windows/#RW_Read_Write_Utility

Then open a command prompt as an administrator

and:

slmgr /upk
slmgr /cpky
slmgr /ipk #####-#####-#####-#####-#####
where ##### is the product key.

Is it indeed a Windows 10 taken from the Microsoft site?
You haven't used KMSPico or any other activator?

To check your computer for possible infections and get a general state of the system:

Follow the FRST tutorial by clicking on this blue link. ( take the time to read carefully - everything is well explained ).

Download and run the FRST scan,
Wait for the scan to finish, a message will indicate that the analysis is complete.

Three FRST reports will be generated:

• FRST.txt
• Shortcut.
• Additionnal.txt

Send these 3 reports to the site https://pjjoint.malekal.com/ and return the 3 pjjoint links that lead to the reports here in a new response so that we can consult them.

(The blue links lead to step-by-step explanatory tutorials, click on them for more precise instructions to follow).

--
Please press any key to continue the disinfection...

yes,

CCleaner is not really useful, even though it is recommended everywhere.
If you want to keep it, disable CCleaner's monitoring, it loads at Windows startup and slows it down with these incessant cleanups. See: https://www.malekal.com/supprimer-ccleaner-demarrage-windows/
Also, remember to disable data sending in the CCleaner options. It sends information to the Avast! servers.

Here is the FRST fix to perform.
You can use this explanatory note with screenshots for help.

1- Open FRST -
2 - Copy the entire script from the box below:

Start:
CloseProcesses:
CreateRestorePoint:
c:\users\maxime normand\appdata\local\chromium
HKU\S-1-5-21-850446052-10811144-4044186625-1001\...\Run: [Chromium] => "c:\users\maxime normand\appdata\local\chromium\application\chrome.exe" --auto-launch-at-startup --profile-directory="Default" --restore-last-session
Task: {2D70D22D-0F71-4FD6-8D3B-2F7C0B93376D} - System32\Tasks\PPI Update => C:\WINDOWS\explorer.exe "hxxp://windowsdefender.club/warning/download.php?mn=5623" <==== WARNING
Task: C:\WINDOWS\Tasks\Online Application V2G5.job => C:\Program Files (x86)\Microleaves\Online Application\Version 2.6.0\Online-Guardian.exe <==== WARNING
Task: C:\WINDOWS\Tasks\Online Application V2G6.job => C:\Program Files (x86)\Microleaves\Online Application\Version 2.6.0\Online-Guardian.exe <==== WARNING
Task: C:\WINDOWS\Tasks\Updater_Online_Application.job => C:\Program Files (x86)\Microleaves\Online Application\Online Application Updater.exe <==== WARNING
EmptyTemp:
RemoveProxy:
Reboot:
End::

3- Once the script is copied, click on Fix.

Let the fix run, once completed you will be asked to restart your PC, do so as soon as prompted, see below.
Then, once your computer has restarted:
4- You will have a Fixlog file on your desktop, send it via https://pjjoint.malekal.com/ and then put the link generated by Pjoint in your next message.
5- CHECK AND LET ME KNOW IF YOUR PROBLEM IS STILL PRESENT.

2°)
Reset/Repair the affected WEB browsers with issues:

• Repair Mozilla Firefox (first paragraph)
• Repair Google Chrome (only the first paragraph).

--
Please press a key to continue the disinfection...

Ok,

Otherwise:
- It doesn't seem like there's any use of KMSpico
- Where does the key you're trying to enter come from?
Does it match a Windows 10 Home (which is what you have)?
Was this PC sold with Windows 10?

--
Please press a key to continue the disinfection...

You're welcome and have a good weekend! =)

--
Please press a key to continue the disinfection...