-you could still log on to your computer using a local account stored in the SAM database on your local computer even if your primary Microsoft credentials were modified.
- you could contact Microsoft and regain access to your Microsoft account and thus regain access to your local computer.
- if you know your Microsoft account password was changed, you could unplug your local computer from the network and use the cached credentials to log on to the local computer. (assumes the computer never attempted to validate credentials since the time of the password changed)
generally, remote access to the computer would take some effort. It could be done, but would require some configuration changes on your local machine before the remote...