Not too sure but I said something about maybe someone computer was logging in to my server as a main computer, then I turned on again and kept allowing the pop up box with warnings, after signing in it all was OK..I am not sure as the last time we use the main comp, when we switched it off it took ages and was uploading update, so I suppose on turning it back we had to authorise those updates,I may be talking rubbish but, hey,

it's working...Thanks for the help!!!!