After installing MapleSAGA, I tried to launch the .exe application and it disappeared, afterwards i tried to extract the winRAR file and it says no archive found and that the archive is either in an unknown format or damaged .
try to delete all maplesaga files, and redownload it in the main page, link as below. http://maplesaga.com/downloads if this still cant happen, try not to run the application after download "automatically". when the administrator prompt you to run maplesaga, click "No" or "Cancel". after that, you can find maplesaga.exe to run it.
nothing works the moment its finished downloading the .exe just disappears from my folder, and when i try to extract the .rar file an error pops.
You should mention how you fixed it. To people having similar issues: it's likely your anti-virus deleting the files, Windows Defender will even delete the archives, either stop Windows Defender while downloading, download it to a whitelisted location or download and move to a whitelisted location quick enough (for me it delete the file after a second). Do not forget to install Maple in a whitelisted location as well.