Windows Installer Errors 2503 & 2502: Called RunScript when not marked in progress & Called InstallFinalize when no install in progress
This is a quick post on how to troubleshoot situations where you get error 2503 (Called RunScript when not marked in progress) followed by error 2502 (Called InstallFinalize when no install in progress) when trying to install or uninstall software with Windows Installer.
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