Error during installation HRESULT : 0x800736B3

Sorry that you have to experience this trouble. Please don’t hesitate to contact us.

The error HRESULT : 0×800736B3 seems to occur at random on some client
with the ClickOnce Installation KeyRocket uses.

Please try first uninstalling KeyRocket through the control panel and afterward installing it again from our website.

If this does not help, please try to your delete the Apps folder:

1. Make sure your explorer shows “hidden and system files” (under folder options)
2. Go to C:\users\\AppData\Local\2.0\\ users = Benutzer or Utilisateurs in other languages
3. Delete all folders that look like “keyr….”
4. Reinstall KeyRocket from

Please contact us if you need help with these steps.

If you continue experience difficulties please email to

Alternatively you can try the special MSI installer.

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