Helping people with computers... one answer at a time.
Tcupdater.exe is a form of malware, and should be removed with an up-to-date spyware scanner.
tcupdater.exe
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Apparently it's some form of malware. I was able to find some details in a discussion forum: here. It indicates that current versions of some spyware scanners should detect and correct it.
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Article C2163 - August 24, 2004