XDA Developers Site Temporarily Down, Error Message Displayed
A visitor attempted to access the XDA Developers webpage about the “Windows 11 C Is Not Accessible” bug report but received an error message due to a temporary site issue or possible permanent relocation. The website’s HTTP2 protocol seems to be malfunctioning, resulting in the display of the Access Denied error message.
Source: https://www.xda-developers.com/windows-11-c-is-not-accessible-access-denied-bug