unable to validate installation message after system crash

[Der SChwule Bill]

Hello,

I have the same problems.But only after my windows crashed.So i want do del D4,but del not pissoble came this error "setup is unable to vlaidate isntallion". I very piss on this shit becasue everything run i donґt want re install windows only for the for this shit!

[Underheaven]

...

Der SChwule Bill, I moved your post here from the [i]"System File Error" when installing 4.0[/i] thread because your issue seems to be a little different.

[VincentL]

Solution to "Setup is unable to validate installation" message

Hello,

I had the same problem, this solution worked for me:

1. Power on your computer.
2. Press F8 to show safe boot options, choose Debugging Mode and press enter.
3. Discard all (mainly Deamon Tools) error messages.
4. Rename the \WINDOWS\System32\Drivers\dtscsi.sys file in whatever you want (to avoid its loading).
5. Restart Windows in normal mode.
6. Discard all (mainly Deamon Tools) error messages again.
7. Put the \WINDOWS\System32\Drivers\dtscsi.sys renamed file to recycle box.
8. You should now be able to uninstall Deamon Tools.
9. Reboot once, Daemon Tools has been now correctly uninstalled.
10. You can reinstall Daemon Tools latest version.