How to open .CAC files on Windows
To open .CAC files on Windows, right-click the .cac file and choose open with..
Step-by-step instructions
- Right-click the .CAC file and choose Open with.
- Select a trusted Windows app that supports .CAC files.
Recommended software
- VS Code
- Notepad++/TextEdit
- jq (CLI)
Alternative methods
- Open .CAC in a browser-based viewer if desktop apps fail.
- Try opening .CAC on Windows with a secondary app to rule out app-specific issues.
- Convert .CAC only with trusted tools when direct opening is not possible.
Common issues
.CAC file does not open
This usually means the required app is missing or the .CAC file is incomplete.
- Install or update a compatible application.
- Verify the file came from a trusted source and was fully downloaded.
- Try opening the file in an alternative app on another platform.
Security note
Only open .CAC files from trusted senders.