But what Louis is saying is that it isn't normal for Windows to give such a message, which could mean that version may have been infected. Having an onscreen message screenshot posted would help determine if there is a possibility of infection.
I remember seeing two different infections years ago... one caused programs to fail to execute that gave the message that it could not start. Another gave the message, "File in infected. Please disinfect your system now."
I saw long ago in the craze on Peer-to-Peer programs (never good... use at your own risk!)... many files would give the message, "Download is cracked," "file is infected," or the best one, "I'm taking over your computer."
TLDR (Too long, don't read): Many programs that are infected or unofficial will give off a specific message, but it is not part of Windows that is giving the message, but the program itself. Hope this helps!
OP (original poster): Welcome to Bleeping Computer. Hope you continue learning a lot. Please post a screenshot of the message you received, and please feel free to obtain the original version of Windows Repair All-In-One by Tweaking.com from @Condobloke's link up there (which is on the Bleeping Computer download area). Let us know how all of this goes.