Hi Bleepin Madman
Thankyou for your response and also the link provided. I wasn't aware of a conflict between Windows Defender[WD] and the avast! antivirus package as WD has been starting up automatically until recently.[WD=antispam / avast=antivirus].
If I leave WD turned off will I still have anti-spam protection with avast anti-virus?
Steps 2 & 3 of the Microsoft fix in the the link provided recommend removing WD then re-installing. ie
2 If this issue is not resolved after you complete step 1, uninstall Windows Defender, and then reinstall Windows Defender. To do this, follow these steps:
3 If this issue is not resolved after you complete step 2, uninstall Windows Defender, use the Windows Installer CleanUp utility, and then reinstall Windows Defender. To do this, follow these steps:
I could not remove WD as it is not listed as a program in Vista.
Do you have any advice please.