Enable PDF previews in Windows Explorer

Open Powershell

Get-ChildItem -Path 'D:\Users\My Folder' -Filter *.pdf -Recurse -File -ErrorAction SilentlyContinue | Unblock-File

 

Ref: 

- https://learn.microsoft.com/en-us/answers/questions/5585306/file-explorer-not-previewing-pdf-files-since-25h2?page=2#answers 

Kubuntu 25.10 Customizations

System Settings -> Mouse & Touchpad

• Screen Edges -> Maximize [uncheck] windows dragged to top edge
•  Screen Edges -> Tile [uncheck] windows dragged to left or right edge

System Settings -> Window Management

• Titlebar Actions -> Double-click -> Do nothing
• Virtual Desktops -> Rows [1] // Add 4 desktops 
• Virtual Desktops -> [Y] Navigation wraps around 
• Desktop Effects -> [Y] Cube // Decided not to enable this

 System Settings -> Keyboard -> Shortcuts

• Window Management -> Quick Tile Window to the Bottom [uncheck]
• Window Management -> Quick Tile Window to the Left [uncheck]
• Window Management -> Quick Tile Window to the Right [uncheck]
• Window Management -> Quick Tile Window to the Top [uncheck] 
• Plasma Workspace -> Activate Task Manager Entry 1:  [unbind]  // Repeat for all 10
• Window Management -> Switch One Desktop to the Left [Meta-Left] 
• Window Management -> Switch One Desktop to the Left [Meta-Right] 
• Window Management -> Switch to Desktop 1 [Meta-1] // Repeat for all 4
• Window Management -> Window to Desktop 1 [Meta+Shift+1] // = Meta+!
• Window Management -> Window to Desktop 2 [Meta+Shift+2] // = Meta+@
• Window Management -> Window to Desktop 3 [Meta+Shift+3] // = Meta+#
• Window Management -> Window to Desktop 4 [Meta+Shift+4] // = Meta+$