How to Open .DIAGCAB Files

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".

Detailed Instructions

Step 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)

7 thoughts on “How to Open .DiagCab Files”

James J on September 28, 2019 at 2:28 pm said:

I have to admit your solution worked for me. I can open diagcab files now, although I was not getting a viewer directly. Thanks.
Lao W on September 30, 2019 at 6:01 pm said:

Works for me too. Thanks a lot.
Paula B on April 13, 2020 at 10:30 am said:

Your solution is really really a simple one.
Dora on April 25, 2020 at 8:09 pm said:

I see why my computer could not open diagcab files now.
Jerry S on June 14, 2020 at 8:46 am said:

Your support is so professional and quick. Thank you very much.
Dean D on August 20, 2020 at 9:13 am said:

Awsome. With your software I don’t need to call my grandson come over fix my computer again.
Cathy S on September 12, 2020 at 9:58 pm said:

Worked on my computer, too.