Hi Papoušek Vít,
Thank you for posting this case in the Microsoft Community!
To change the behavior of the delete key in Outlook, you can follow these steps:
1. Open Outlook and click on the "File" tab in the top left corner.
2. Click on "Options" in the left-hand menu.
3. In the Outlook Options window, click on "Advanced" in the left-hand menu.
4. Scroll down to the "Outlook panes" section and click on "Reading Pane".
5. In the Reading Pane settings, you will see an option for "Single key reading using space bar". Uncheck this option.
6. Click "OK" to save your changes.
This should change the behavior of the delete key in Outlook so that it only deletes the immediate text, rather than the entire email.
Please do not hesitate to contact me with any questions or concerns. I look forward to hearing from you.
Please note that our initial response may not always resolve the issue right away. However, with your help and more detailed information, we can work together to find a solution.
Sincerely
Microsoft Community Moderator
These steps do not work.
In Outlook (classic) for Windows, I unchecked the "Single key..." option as shown and saved
Despite doing this, I still cannot use the Delete key on my keyboard with Outlook (classic) when editing a reply being composed inside the main Outlook window. When pressing Delete, instead of it deleting the character to the right of the cursor, it deletes the entire email. I then move the email draft out from the Deleted items back to Drafts, then instead of editing the email directly from the Drafts folder I have to open the draft email in its own, separate window. The Delete key works as expected if the email is in its own window. I can't recall exactly when it started behaving like this, but I would say late May to June.
If this is a bug, it needs to be fixed. If there's an option to configure the Delete key's action, what is the option?
Windows 10 22H2
Outlook Version 2406 (Build 17726.20126 Click-to-Run Current Channel)
Thanks