I posted this yesterday morning, (Sunday) and no response. This post is to "bump" it up in hopes of an answer today: I have run SFC several times for no particular reason. A few times it just breezed through, other times it comes up with missing DLL's, Insert CD. I click past these, and after a reboot, run it again, and it breezes right through. My computer runs fine, so I wonder if this is a common problem with SFC. Since this version doesn't give you any info on the missing/corrupted file, it's impossible (?) to check out files. Thanks for any help.

OK John, ======================================== You know what sfc /csannow does. You must insert the original XP Setup CD before you type sfc /scannow. A little window will pop up saying: Please wait while Windows verifies that all protected Windows files are intact and in their original versions. After it is done it won't say anything, but the missing or corrupted System files will be replaced. Doing this from time to time won't harm your computer. Hope this is the answer you're waiting for. Cheers de Peter

Hmmm, it could be false-positive. A bug perhaps? It's the first I heard of this, however, that does not mean it has not happened to others.

Thank you, Peter!

Peter-P2P, Thanks for the replies. Yeah, I'm familiar with SFC in 98SE. I'm NOT familiar with the two different readings I get from it in XP. Sometimes SFC just goes along smoothly, and another time every second or two it tells me I'm missing a .DLL. Don't believe the system would be running as flawlessly as it is with all those .DLL's missing. I guess this is just another thing I'll ignore unless I develope a problem. Seems to me XP has made a few things easier and a bunch more difficult.

it's a matter of missing vs altered john. the missing dll's are actually missing ORINGINAL dll's. they're being replaced from the CD with factory dll's. any programs you run may be responsible using their own dll's depending on how they check for dll's they require and if they move there own versions around.

OK, Justin77, got it, I think. So like 98SE would say something like "corrupt/altered", XP just says missing. That's a pain in the butt. So everytime AV gets updated and deletes/changes/replaces a file, this SFC is right there to ask for the CD, huh? SFC in 98SE was far from perfect, but at least it told you what the problem item was, and you could check it out.