Login Errors - 2147516546 & 2147516566
If you encounter error messages containing "2147516566" or "2147516546" when starting Kameleo, this article will help you resolve them. In general, they can be recognized because they appear like this:

About these errors
These issues occur on Windows 10/11 systems, particularly affecting users with the "Professional" version of Windows. Both errors have the same cause and solution. The root cause appears to be related to Windows itself rather than Kameleo.
Update Windows
Windows 10:
- Click the Start button
- Go to Settings (gear icon)
- Select "Update & Security"
- Click "Windows Update"
- Click "Check for updates"
Windows 11:
- Click the Start button
- Go to Settings (gear icon)
- Select "Windows Update" from the left sidebar
- Click "Check for updates"
Installing available updates is important for system stability and security.
Reinstall .NET 8.0
After updating Windows, install .NET 8.0. This is the latest version of the .NET framework and is crucial for resolving these errors. - Download .NET 8.0 from Microsoft
Clear the Temp folder
Delete all contents from your Temp folder:
- Open File Explorer (Windows Key + E)
- In the address bar, type or paste:
C:\Users\%USERNAME%\AppData\Local\Temp(Replace %USERNAME% with your actual Windows username) - Press Enter
- Select all files and folders in the Temp folder
- Delete them
After completing these steps, restart your computer and launch Kameleo again.