Quickbook crashes when trying to start backup

Let's get your data backed up, mk45.

Updating the QuickBooks Desktop release version is a good start when it comes to fixing program-related issues. After that, you can go back and start backing up your file.

However, if the crashing persists, let's perform the verify and rebuild process. Here's how:

To Verify Data:

1. Click Window at the top menu bar, then Close All.
2. From the File menu, choose Utilities.
3. Tap Verify Data.
   

To Rebuild Data:

1. Click Window at the top menu bar, then Close All.
2. From the File menu, choose Utilities.
3. Hit Rebuild Data.
   
4. You will receive a warning message to backup your company file, press OK.
5. Click OK when you get the message "Rebuild has completed".

Once done, you can refer to this article for the detailed steps in backing up your data: Back up your QuickBooks Desktop company file. 

You can always get back to me if you need additional assistance. I'll zip right back to help you out. Have a wonderful day!