Installshield Setup Launched But Seems To Have Closed Without Finishing Now

msiexec /i extracted.msi

InstallShield unpacks files to a temporary folder and executes them. Antivirus software (especially Avast, AVG, Norton, or Windows Defender) can mistakenly flag these unpacked scripts as "suspicious activity" and kill the process. msiexec /i extracted

Even if you are an admin, InstallShield often requires explicit elevation to write files to protected system folders. msiexec /i extracted

(Note: If your InstallShield version is different, check the InstallShield folder for the version number. Common versions are 7, 9, 10, 11, or 1050.) msiexec /i extracted