How to delete password in PowerPoint presentation

Step: #1

Open the powerpoint presentation whose password you want to delete.

Step: #2

Now click on the Office button and click on Prepare > Encrypt Document.

Step: #3

After this, delete the old password from the password box that appeared in front. And click on OK.

Step: #4

Now one after the other save the presentation and close it. Doing so will remove the password from the presentation. Open it to test.