If you receive the activation error 0xc004f009, it indicates that the grace period has expired.
After that, your operating system will be unstable and vulnerable because some important functions might fail to work.
Therefore, you gotta solve activation error code 0xc004f009as soon as possible.
![]()
In this guide, we have list 5 effective solutions to you.
Scroll down to get detailed instructions.
This post will be helpful to you.

How to Fix Windows 10 Activation Error 0xc004f009?
Heres how to run Windows Activation Troubleshooter:
Step 1.
PressWin+Ito openWindows Settingsand selectUpdate & Security.

In theActivationtab, hitTroubleshoot.
If this tool detects any problems, follow the on-screen commands to solve it.
If this is the case, you could extend the grace period by tweaking the value data of mediabootinstall.
![]()
To do so:
Step 1.
Navigate to the following path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OOBE\mediabootinstall
Step 4.
LaunchCommand Promptwith administrative rights> typeslmgr -rearm> hitEnter.
Step 6. cycle your setup and repeat the activation process.
Therefore, repairing system file corruption viaSFCandDISMis also worth a shot.
To do so:
Step 2.
Typecmdand pressShift+Ctrl+Enterto launchCommand Promptas an adminstrator.
In the command window, typesfc /scannowand hitEnter.
After the process is done.
If yes, this guide might help you out!
Fix 4: Activate Windows via CMD
Step 1.
RunCommand Promptas an administrator.
In the command window, typevbs -ipk and hitEnter.
Remember to replaceMAK keywith your MAK key.
After Windows is installed, typevbs -atoand hitEnterin an elevatedCommand Prompt.
Step 4. power cycle your setup to see if activation error 0xc004f009 is gone.
Heres how to do it:
Step 1.
Right-press theStart iconand selectRun.
Typems-options:activationorSLUI 4and hitEnter.
Choose your country and hitPhone Activation.
Call the provided phone number to contact Microsofts support team to activate the copy of Windows on Phone.
Final Words
Thats all you’re able to do to deal with grace period error 0xc004f009.
If none of the solutions help you out, you’ve got the option to contactMicrosoft supportdirectly.
After that, you’re able to use Windows without any restrictions on its features.
Have a nice day!