Some error messages you may encounter when installing Anki:
Please also see startup issues.
If closing Anki and your browser does not help, please try restarting your computer, then running the installer again.
When a new Anki version is released, Windows may display a scary-looking message until it has seen enough people using the new version. To be able to proceed with app installation, please use Run anyway.
Antivirus programs may sometimes also report a false positive.