Windows 11 has introduced a sleek, modern interface, but some users encounter oversized pop-up windows that disrupt workflow, particularly in applications like Adobe Dreamweaver. This guide explores the root causes and provides step-by-step solutions to resolve display scaling issues in Windows 11.

Understanding the Problem

Oversized pop-up windows often occur due to:
- DPI Scaling Mismatches: When display scaling settings aren't properly applied across all applications.
- Outdated Graphics Drivers: Incompatible drivers may fail to render windows correctly.
- Application-Specific Bugs: Some apps (like Adobe Dreamweaver) may not fully support Windows 11's scaling features.

Step-by-Step Fixes

1. Adjust Display Scaling Settings

  1. Right-click the desktop and select Display settings.
  2. Under Scale & layout, try different scaling percentages (100%, 125%, 150%).
  3. Check the box for Fix scaling for apps if available.

2. Update Graphics Drivers

  1. Press Win + X and select Device Manager.
  2. Expand Display adapters, right-click your GPU, and select Update driver.
  3. Choose Search automatically for drivers and follow prompts.

3. Modify Application Compatibility Settings

For problematic apps like Dreamweaver:
1. Right-click the application shortcut and select Properties.
2. Navigate to the Compatibility tab.
3. Check Disable display scaling on high DPI settings.
4. Click Apply and restart the application.

4. Edit System DPI Settings

  1. Search for Control Panel and open it.
  2. Navigate to Appearance and Personalization > Display.
  3. Select Set a custom scaling level and adjust as needed.

5. Use Windows Troubleshooter

  1. Go to Settings > System > Troubleshoot > Other troubleshooters.
  2. Run the Display troubleshooter.

Advanced Solutions

Registry Tweaks (For Advanced Users)

  1. Press Win + R, type regedit, and hit Enter.
  2. Navigate to:
    HKEY_CURRENT_USER\Control Panel\Desktop
  3. Modify these values (create if missing):
    - LogPixels (DWORD) - Set to 96 for 100% scaling
    - Win8DpiScaling (DWORD) - Set to 1
    - DPIscalingVer (DWORD) - Set to 0x00001018

Clean Boot for Software Conflicts

  1. Type msconfig in the Windows search bar.
  2. Under the Services tab, check Hide all Microsoft services then click Disable all.
  3. Under the Startup tab, click Open Task Manager and disable all startup items.
  4. Restart your computer and test pop-up windows.

Preventing Future Issues

  • Keep Windows 11 and all applications updated
  • Maintain updated graphics drivers
  • Report scaling bugs to Microsoft and application developers
  • Consider using Microsoft's PowerToys FancyZones for window management

When to Seek Professional Help

If these solutions don't resolve your oversized pop-up windows:
- Contact Microsoft Support
- Reach out to the application's support team (e.g., Adobe for Dreamweaver issues)
- Consult with an IT professional for hardware diagnostics

Remember that display scaling issues often require trial and error. The solution that works may depend on your specific hardware configuration and software combination.