Problem

A ZoomText/Fusion user encounters a problem with any of the following, no magnification, screen corruption or a black screen ZoomText/Fusion is launched. .

Applies to

1. ZoomText/Fusion

Resolution

1. Please update to the latest ZoomText/Fusion 2026.2603 or later if license permits,  Users of earlier version may wish to check www.freedomscientific.com for updated builds of earlier major versions. 
   
2. If magnification appears but is not behaving properly try setting resetting it to Let ZoomText decide first.
   
3. If a you encounter a black screen when ZoomText/Fusion starts please try Maginification API or Magnification API (non magnified screen capture) instead. 
   
4. Where any of the above do not work it is possible there are two display adaptors on the machine, select Specific Adapter option and select one of the available adaptors.
   

From main window - using the mouse

1. Click on the ZoomText/Fusion taskbar button to open the main window.
   
2. Then click ZoomText/Fusion menu > Help > Advanced > Display Adaptor. 
   
3. In the new window make a note of the currently seelected setting to return to it if required.
   
4. Then pick one of the othe options listed below that is different to the current setting:
   
   Let ZoomText Decide (Default)
   First available (video card name)
   Magnification API
   Magnification API (non magnified screen capture)
   Specific adapter
   
   
5. After picking an option click OK button.
   
6. When prompted whether to restart ZoomText or Fusion click the Yes button to restart with the new setting.
   
7. Test if the new setting has resolved the problem.

From main window - using the keyboard

1. Press CONTROL+CAPSLOCK+U to open the ZoomText/Fusion main window.
   
2. Then press ALT followed by F to open the Fusion menu.
   
3. Press DOWN ARROW to Help then press ENTER.
   
4. In the sub menu select Advanced and press ENTER.
   
5. Then select Display Adaptor then press ENTER.
   
6. In the new window make a note of the currently selected option.
   
7. Then select one of the other options from the list below that is different from the current setting using the UP/DOWN ARROW keys.
   
   Let ZoomText Decide (Default)
   First available (video card name)
   Magnification API
   Magnification API (non magnified screen capture)
   Specific adapter
   
   
8. Then press TAB to reach OK button then press SPACEBAR.
   
9. When prompted to restart press TAB to select Yes then press SPACEBAR to have it restart with the new setting..
   
10. Then test to see if the new setting has resolved the problem.
    

Note

1. For ZoomText 2024 click ZoomText menu > Advanced > Display adaptor
   
2. For ZoomText 2023 and below click ZoomText Menu > ZoomText Support > Display adaptor
   

1.  Then double click to open Change Display Adaptor Settings.
   
2. Then click any of the options below:
   
   Let ZoomText Decide (Default)
   First available (video card name)
   Magnification API
   Magnification API (non magnified screen capture)
   Specific adapter 
   
   
   
   
3. Then click OK to confirm the settins a\nd restart ZoomText/Fusion.

Note

1. AdapterType=MagApiExcludeFromCapture is available from ZoomText/Fusion 2026 and later.
   
2. AdapterType=MagAPI is availble in ZoomText/Fusion 2025 and lower, this setting does not exclude screen enhancements from being passed through.
   

Modify configuration file

1. Navgate to and open the config file located at the path below:
   
   C:\ProgramData\Freedom Scientific\ZoomText\2026\DwmDll.ini 
   
   
2. Then navigate to the [Config] section and made the modification below as approrpiate to the version of ZoomText being used (see note below):
   
   AdapterType=MagApiExcludeFromCapture
   
   or
   
   AdapterType=MagAPI
   
   
3. Then save and close the file.
   

Note

1. AdapterType=MagApiExcludeFromCapture is only supported in ZoomText/Fusion 2026 and later.  
2. For ZoomText/Fusion 2025 and below use AdapterType=MagAPI instead.