Heaven help us all...
When you see a message like this:
Windows File Protection
Files that are required for Windows to run properly have been replaced by unrecognized versions. To maintain system stability, Windows must restore the original versions of these files.
Hopefully, you are curious to know what the file is and when you know that, you can decide what to do about it.
You should click Cancel, then click Yes to keep the file, then you will have an event to look at that will tell you what the problem file is.
Look in the Event Viewer System log to see what the file name is, then decide what to do.
When in the Event Viewer System log, click the 'Source' column heading to sort the events alphabetically by the Source name. The 'Windows File Protection' events should be near the bottom of the list (since they start with 'W').
The event will look something like this example:
Event Type: Information
Event Source: Windows File Protection
Event Category: None
Event ID: 64005
Date: 1/10/2011
Time: 2:41:56 PM
Description:
The protected system file taskmgr.exe was not restored to its original, valid version because the Windows File Protection restoration process was cancelled by user interaction, user name is Jose. The file version of the bad file is unknown.
When you know what the file is, you can decide what to do about it. There may already be other copies of the file(s) on your system or you can get the file(s) from another source - someone can upload the file(s) you need to their SkyDrive and you can download
and replace the file(s) one at a time. First you must figure out what the file is that XP thinks it needs.
A shortcut to Event Viewer is to click Start, Run and in the box enter:
eventvwr.msc
Click OK to launch the Event Viewer.
Check your Event Viewer System log and look for an event sourced by Windows File Protection.
When in the Event Viewer System log, click the 'Source' column heading to sort the events alphabetically by the Source name. The 'Windows File Protection' events should be near the bottom of the list (since they start with 'W').
If you double click an event, it will open a Properties window with more information. On the right are black up and down arrow buttons to scroll through the open events. The third button that looks like two pages on top of each other is used to copy the event
details to your Windows clipboard.
When you find an interesting event that occurred around the time of your issue, click the third button under the up and down arrows to copy the details and then you can paste the details (right click, Paste or CTRL-V) the detail text back here for analysis.
Remove any personal information from your information after pasting if you are compelled to do so.
It could also be that your antivirus/antimalware program is out of data and has quarantined (effectively deleted) the files.
Describe your current antivirus and anti malware situation: McAfee, Symantec, Norton, Spybot, AVG, Avira!, MSE, Panda, Trend Micro, CA, Defender, ZoneAlarm, PC Tools, Comodo, etc.
In the Event Viewer System log you will see a message like this:
Event Type: Information
Event Source: Windows File Protection
Event Category: None
Event ID: 64002
Description:
File replacement was attempted on the protected system file c:\windows\system32\taskmgr.exe. This file was restored to the original version to maintain system stability. The file version of the system file is 5.1.2600.5512.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
If you click the Retry box, and see a message like this:
Windows File Protection
The CD you provided is the wrong CD.
Please insert the Windows XP Professional Service Pack 3 CD into your CD-ROM drive.
If you click the Cancel box, in the Event Viewer System log you will see a message like this:
Windows File Protection
You chose not to restore the original versions of the files. This may affect Windows stability.
Are you sure you want to keep the unrecognized file versions?
If you click Yes to skip the message (which doe not fix the problem) in the Event Viewer System log you will see a message like this:
Event Type: Information
Event Source: Windows File Protection
Event Category: None
Event ID: 64005
Description:
The protected system file taskmgr.exe was not restored to its original, valid version because the Windows File Protection restoration process was cancelled by user interaction, user name is Jose. The file version of the bad file is unknown.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.