There was a download of UpdateScanner 5.1.0.55 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free software was originally designed by Manuel Hoefs (Zottel).
The program lies within System Utilities, more precisely System Optimization. The following versions: 5.1, 5.0 and 4.3 are the most frequently downloaded ones by the program users.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The default filenames for the program's installer are UpdateScanner.exe, Scanner.exe or Update.exe etc.
From the developer:
UpdateScanner is a simple utility to check for missing Windows updates. If some important patches are missing, this program will inform you, along with a relevant link to download it. This program supports only Windows 2000, XP, and 2003. The present version has improved Microsoft URLs to solve download problems and dead links.
You may want to check out more software, such as Downloadcrew UpdateScanner, which might be similar to UpdateScanner.