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App Won't Open ​

The app crashes or fails to launch

If optimizerDuck fails to start, don't worry! Try these simple solutions to get it running:

Check system requirements ​

Make sure your system meets the minimum requirements:

RequirementDetails
OSWindows 10 or Windows 11 (64-bit)
PermissionsAdministrator privileges required
Disk spaceAt least 100 MB free on your system drive (usually C:)

Run as Administrator ​

optimizerDuck requires Administrator privileges to apply system optimizations.

Right-click the optimizerDuck application file
Select “Run as administrator”

Set always run as Admin

If you always want to run optimizerDuck as Administrator:

Right-click the file and select Properties
Go to the Compatibility tab
Check “Run this program as an administrator”
Click OK to save changes

Check for corrupted download ​

Your download may have been interrupted or corrupted:

  1. Delete the downloaded file
  2. Re-download optimizerDuck from the download page
  3. Try running the newly downloaded file

Check disk space ​

If your system drive (C:) is nearly full, apps may fail to launch or behave unexpectedly:

Open File Explorer
Right-click your C: drive and select Properties
Check the available free space

If space is low, try:

  • Emptying the Recycle Bin
  • Running Disk Cleanup (search for it in the Start menu)
  • Moving large files to another drive

Check for missing dependencies ​

In rare cases, optimizerDuck may require the .NET Runtime to be installed. If you see an error about missing frameworks:

  1. Visit Microsoft .NET Downloads
  2. Download and install the latest .NET Desktop Runtime (not just the Console Runtime)
  3. Restart your computer and try again

Run a System File Check ​

If the app crashes immediately without any error message, your system files may be corrupted:

  1. Open Command Prompt as Administrator
  2. Run:
    bat
    sfc /scannow
  3. Wait for the scan to complete (this may take 15-30 minutes)
  4. If issues are found, restart your computer and try launching optimizerDuck again

Check Windows Event Viewer ​

If optimizerDuck still won't open, the Windows Event Viewer may contain helpful error details:

Press Win + R, type eventvwr.msc, and press Enter
Navigate to Windows Logs > Application
Look for error entries related to optimizerDuck or .NET Runtime
Inspect the error details to identify the root cause

I found a bug / want to request a feature ​

Open an issue on GitHub with as much detail as possible: your Windows version, what you were trying to do, and what went wrong. Feature requests are also welcome.

Still having issues? ​

If you continue to experience problems: