Avast not detected by Windows

(Sorry for my poor english) 8)

Since about last week, on system startup (windows XP), I get an error message : windows doesn’t detect any antivirus running (the red shield at the bottom right of the screen). But avast is running normaly.

How can I get rid f the error message ?

Thx in advance

what’s your OS?

Try to repair your Avast!. Maybe it is helpful and it is the simplest way.
IMO, Windows Security Center is worthless and you’d better stop the service.

If there is a red circle with a bar over the top of the avast ‘a’ icon then avast isn’t running normally.

Windows Security Center not recognising avast!
Frequently asked questions about Windows Security Center

Check this - Solution when Windows Security Center does not recognize antivirus or firewall