Xbox Live sign-in issues have been addressed.
Xbox Live users should now be able to sign into Xbox Live on all platforms.
If you are having issues logging into Xbox Live, it’s not just you.
Microsoft has said it is aware of users on multiple platforms being unable to log into Xbox Live.
Rest assured, a team is looking into the issue.
We're aware that users are currently unable to sign into Xbox Live on various platforms. The right teams are looking into the issue and working on a fix. We'll provide updates here on our Twitter, or on our status page at https://t.co/dG2dbISiH7
— Xbox Support (@XboxSupport) November 10, 2020
Looking over the Xbox Live Status page, it appears core services and Destiny 2 are the main issues.
Once things are straightened out, we will be sure to update this post.
Xbox Series X/S both launched today.