Problems and Symptoms
Cannot open .DIAGCAB files on Windows PC. When trying to open a .DIAGCAB file, a dialog with message "Windows cannot open this file" pops up. Error message "Windows does not recognize this file type".
If you computer has some or all of the problems above, we highly recommend using PC TuneUp Maestro to enable your PC to open .DIAGCAB files.
Detailed InstructionsStep 1: Download DIAGCAB file error repair tool and install it
Step 2: Click "Start" button
Step 3: Click "Fix Items" and that's it
File Size: 2M ( < 20 sec. on DSL/ADSL/Cable Modem)