Hi MI,
Welcome to Microsoft Q&A!
I understand why it is uncomfortable to see a locked system folder appear unexpectedly, especially when Windows won’t let you inspect or remove it. However, this is designed behavior.
WsiAccount is a system‑managed local account used by Windows Web Sign‑in / passwordless sign‑in scenarios. It is not only created when offline, but also other scenarios like:
- You clicked “Forgot password” at sign‑in (even briefly)
- You used or attempted passwordless / Authenticator / PIN recovery
- Windows invoked Web sign‑in internally after an update or recovery scenario
When this feature is invoked (even once), Windows creates the WsiAccount profile, which won't auto‑delete after that. This folder should not be removed because other sign‑in components depend on it.
The folder is locked by design, and you are not meant to browse its contents. Plus, the contents are credential‑handling data used by the sign‑in subsystem, meaning it's not meant for human-reading anyway.
In short, WsiAccount folder is normal, protected, and permanent once created. It cannot be removed safely, so the best next step is to leave the folder alone.
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