Windows activation or validation fails with error code 0x8004FE33

Applies to: Windows 10 Pro released in July 2015Windows 10Windows 8.1 More

Symptoms


Windows activation or validation fails when you try to activate Windows operating systems over the Internet. 
Additionally, you may receive one or more of the following errors:
  • Error code: 0x80004005 Description: License Activation (SLUI.exe) failed. 
  • Error code: 0x8004FE33 Description: Acquisition of Secure Processor Certificate failed. 
  • The activation failure does not prompt you for credentials.
These problems may occur when you connect to the Internet through a proxy server on which Basic authentication is enabled.

If you experience other errors than those mentioned above when you try to activate Windows, go to the following Windows websites for additional troubleshooting information:

Workaround


Method 1: Activate Windows by telephone

Use the Windows Activation Wizard to activate Windows through the automated telephone system. To do this, follow these steps for your version of the operating system.  

Method 2: Configure the proxy server to disable Basic authentication

Configure the proxy server to disable Basic authentication. For information about how to use this method, see the documentation that is included with the proxy software.
 

Method 3: Configure the proxy server to exclude URLs for certificate revocation lists

Configure the proxy server to exclude the URLs for the certificate revocation lists (CRLs) from the requirements for Basic authentication. To do this, configure the following list of CRLs to be unauthenticated on the proxy server:
  • https://go.microsoft.com/ 
  • http://go.microsoft.com/
  • https://login.live.com
  • https://activation.sls.microsoft.com/
  • http://crl.microsoft.com/pki/crl/products/MicProSecSerCA_2007-12-04.crl
  • https://validation.sls.microsoft.com/
  • https://activation-v2.sls.microsoft.com/
  • https://validation-v2.sls.microsoft.com/
  • https://displaycatalog.mp.microsoft.com/
  • https://licensing.mp.microsoft.com/
  • https://purchase.mp.microsoft.com/
  • https://displaycatalog.md.mp.microsoft.com/
  • https://licensing.md.mp.microsoft.com/
  • https://purchase.md.mp.microsoft.com/

For information about how to use this method, see the documentation that is included with the proxy software.

Note Microsoft cannot supply IP addresses or ranges of the servers listed above. The URL must be used. 

More Information


For more information about Windows Vista Volume Activation 2.0, click the following article number to go to the article in the Microsoft Knowledge Base:

For more information about how to activate Windows Vista, click the following article number to go to the article in the Microsoft Knowledge Base:For more information how to troubleshoot Volume Activation error codes, click the following article number to go to the article in the Microsoft Knowledge Base:
 If these articles do not help you resolve the problem, search the Microsoft Knowledge Base for more information. To search the Microsoft Knowledge Base, go to the following Microsoft website:In the Search Support (KB) field, type the text of the error message that you receive, or type a description of the problem.