|I don't recall anything to do with MS that would cause that message. It might be from a third party Anti-Virus program - can you shed any light on it?|
If you find one on there you could either disable it or uninstall it. If you need an AV, Avast old version 4.8.0 still works on Win 98 (and updates) but I know of nothing else for W98.
Always pop back and let us know the outcome - thanks