windows 11 activation issue

Hello,

For Windows activation, you need to ensure that the following are accessible:

TCP Port 80: Used for HTTP requests.

TCP Port 443: Used for HTTPS requests.

UDP Port 67/68: These are used for DHCP, but they are more related to IP configuration rather than activation directly.

TCP Port 1688: This is sometimes used for activation over HTTP.

Additionally, you should allow access to the following domains and URLs to ensure activation services work correctly:

microsoft.com

go.microsoft.com

sls.microsoft.com

activation.sls.microsoft.com

crl.microsoft.com

Best Regards,

Hania Lian

============================================

If the Answer is helpful, please click "Accept Answer" and upvote it.

Hello,

Use this page for the names of the websites to add to teh proxy:

https://support.microsoft.com/en-gb/topic/windows-activation-or-validation-fails-with-error-code-0x8004fe33-a9afe65e-230b-c1ed-3414-39acd7fddf52

To activate Windows, you need to enable the following ports1:

TCP port 80 – The default port for HTTP.

TCP port 443 – This is the default port for HTTPS.

UDP port 3478 – One of the default ports for UDP.

UDP port 3479 – Another default port for UDP.