Installer integrity check has failed windows 7 Installer integrity check has failed. net/NSIS_Error I just formatted my hardrive after finding out i was stuck in a boot loop and reinstalled windows 7. Whenever i try to launch any installers it comes with a message that says "Installer integrity check Jan 7, 2024 · Installer integrity check has failed. net/NSIS_Error. More information at: http://nsis. Contact the installer’s author to obtain a new copy. Jul 29, 2010 · Place the computer in a clean boot state and troubleshoot the issue and check if it helps. sf. " "Installer integrity check has failed. Jun 4, 2021 · Installer integrity check has failed.