Hi
mojo9992001.
The Microsoft Malware Removal Tool can be updated and reinstalled if necessary like any other Windows update.
If you think that Windows Update is not working fine, use the System Update Readiness Tool: read the Microsoft Knowledge Base article
947821 to know more about that; after the tool completes, run Windows Update again.
Bye.
Luigi Bruno
MCP, MCTS, MOS, MTA