Windows 10: How to fix OEM Product Key Issue?

Windows 11 is showing an Activation Error after installing the latest Update. 'Windows reported that there was a problem with your OEM product key. Error Code: 0xC0045215'I have made no hardware changes and the system had been working perfectly fine the night before.The troubleshooter was unhelpful.I would appreciate some assistance.

:)

 

OEM Product Key

Hi Sermex,



Welcome to Microsoft Community and thank you for your interest in Windows 10.

I understand the inconvenience that you are experiencing. I will definitely assist you.



I suggest you to use the phone activation option and check if it help to resolve the issue. Follow the below provided information:

• 
  Press Windows key + X and click on
  Run,
  
• 
  Type slui 4 in the box and hit Enter Key.
  
• 
  Select your 'Country' from the list.
  
• 
  Choose the 'Phone Activation' option.
  
• 
  Stay on the phone and wait for a person to help you.
  
• 
  And also you can explain your problem clearly to the support person.
  

Hope this information helps, please post us with the status we will be glad to help you.

 

product key issue

The Original Poster has not responded regarding your suggestion; however, I am having the same issue and can confirm that I have the correct upgrade version of Windows 10. I am trying to upgrade from Windows 8.1 Pro (most currently updated version) using
Windows 10 Pro via USB drive.

My 8.1 Pro is activated, but my OEM product key for 8.1 Pro is not accepted by Windows 10. I also have confirmed that the product key works by re-entering the product key.

Thanks in advance!

 

product key

Hi,

Thank you for posting your query in Microsoft Community.

Please follow the below steps to resolve this issue:

Steps:

• Press and hold Windows key + R.
• Type ‘slui 3’.
• Enter your old product key and try to change product key
• Use the new product and check if you are able to activate.

For more information please follow the link given below, this information is provided by Andre Da Costa.

http://answers.microsoft.com/en-us/insider/wiki/insider_wintp-insider_install/how-to-activate-and-resolve-common-product-key/33f31475-93b3-4d1c-812f-4b21fbd807a7

Please get back to us if you are still facing this problem.

Hope the information helps to fix the issue, if you have any further queries, feel free to post. We are here to assist you.

Regards,

Guru Kiran