Click and select "I don't have this person's sign-in information." Choose "Add a user without a Microsoft account." Set a name (e.g., "TempAdmin") and password. Change the account type to Administrator . Sign out of your main account and log in to "TempAdmin." Phase 3: Rename the User Folder

The consequences of a naive rename range from the inconvenient to the catastrophic. A user might find that their desktop icons disappear, pinned taskbar shortcuts break, or applications fail to launch with cryptic errors about missing paths. In more severe cases, the user profile may become entirely unloadable, leaving the individual locked out of their own settings and forced to create a completely new user account. This fragility explains why Microsoft provides no straightforward, GUI-based option for this task. The design decision is not arbitrary; it is a safeguard against accidental system destabilization.

Rename-Item -Path "C:\Users\<oldusername>" -NewName "<newusername>"