Adobe closed and I didn't save

You should not be using Acrobat as a word processing application. It was never meant to be that, and the PDF format is not suitable for it. In the future, create the file in another application (Word, InDesign, etc.), and then convert it to a PDF when done. If changes are needed go back to the original, edit it, and then create a new PDF from it.

Hi Monica,

Hope you are doing well and sorry for the trouble. As described , on saving the PDF you got a blank window and then the application closed and you lost the document.

Would you mind sharing the version of the Adobe Acrobat DC you are using? To check the version go to Help > About Acrobat and make sure you have the latest version installed go to Help > Check for Updates and reboot the computer once.

1. As you got the blank Window on saving, please  try the following preference settings:

Go to Edit (Windows), Adobe Acrobat (Mac) > Preferences > General > Uncheck 'Show online storage when saving file' and 'Show online storage when opening file' > Click OK and check.

2. Also, Acrobat DC automatically saves document changes to temporary file if you have the setting enabled. Go to Edit (Windows), Adobe Acrobat (Mac) > Preferences > Documents > Under Save Settings, Check 'Automatically saves document changes to temporary file'

For more information, please check out the similar discussion https://community.adobe.com/t5/acrobat/where-does-acrobat-save-temp-files/m-p/4208450 and see if that helps.

You may also check out the steps shared in the help page https://helpx.adobe.com/acrobat/kb/acrobat-dc-crashes-on-windows-os.html

Regards

Amal