bleepingcomputer[.]com/news/security/microsoft-winget-package-manager-failing-from-expired-ssl-certificate/
I don't know how many [if any] use WinGet, Microsoft's package mgr., but if you do it's broken because someone(s) forgot to renew the WinGet CDN's SSL/TLS certificate. If you don't want to wait until they fix it, the workaround is to specify using a URL that's an alias with a valid certificate.
sudo winget source add -n winget https://winget.azureedge.net/cache
The winget tool source command enables users to manage sources for Windows Package Manager. With the source command, one can add, list, edit, delete, reset, or export repositories used by WinGet.Note: When executing the above command, 'sudo' is not required if the command is being run in PowerShell by an administrator account. Should you experience errors, try removing the default WinGet source prior to adding the new azureedge link.
The azureedge URL in question is an alias for WinGet's CDN, albeit with a valid certificate which makes it a viable solution for WinGet devs:
For anyone who doesn't know what WinGet is or does, a part of the app installer, it allows you to install/update/uninstall apps from its repository [or a repository you set], and can manage several apps at once, so it can be handy setting up a new PC/laptop &/or Windows install. Many find it more useful however as a way to uninstall some of the apps [usually bloatware] that come with Windows that cannot be uninstalled otherwise.
learn.microsoft[.]com/en-us/windows/package-manager/winget/