Installer won't open?

Step 1 — Re-download from the official source

Delete the previous installer and download again directly from retunerpro.com/install.html. A partially downloaded file will not launch.

Step 2 — Unblock the file and run as administrator

1. Right-click the installer file and choose Properties.
2. At the bottom of the General tab, look for an Unblock checkbox. If it's there, check it and click Apply.
3. Right-click the installer again and choose Run as administrator.

Windows marks downloaded executables as potentially unsafe by default. Unblocking and running as admin resolves the most common launch failures.

Step 3 — Windows SmartScreen warning

If you see a blue window saying "Windows protected your PC" or "Unrecognized app":

1. Click More info (appears below the warning text).
2. Click Run anyway.

SmartScreen flags new apps until enough users have run them. The installer is safe — this warning is expected for newly released software.

Step 4 — Antivirus or optimizer software

Some security tools and PC optimizer suites (including System Mechanic, Norton, and similar) aggressively block or quarantine new installer files.

• Check your antivirus quarantine for the installer file.
• Temporarily disable real-time protection, run the installer, then re-enable protection.
• If your security software has an allow-list or exclusion feature, add the Retuner Pro installer before running it.

Step 5 — User Account Control (UAC)

If a UAC prompt appears asking to allow the app to make changes to your device, click Yes. The installer needs elevated permissions to install the VB-CABLE virtual audio driver.

If no UAC prompt appears at all, try right-clicking the installer and choosing Run as administrator explicitly.

Still blocked?

Email [email protected] and include:

• Your Windows version (Settings → System → About)
• The name of any security or antivirus software you are running
• A screenshot of the error or warning message you're seeing

We typically respond within one business day.