This is a common issue, and you could find help in thisMiniToolpost by following step-by-step instructions.
PowerPoint and Microsoft Word are both popular tools used by many users every day.
Updating them may deal with the error.

Step 1: TypeControl Panelin the search bar, and pick the appropriate result from the list.
Step 3: ClickMicrosoft Officeand select theChangeoption on the top toolkit.
Step 4: Choose theYesbutton in the UAC prompt.

Step 5: In the following interface, checkQuick Repairand click theRepairbutton.
After completing the above steps, you gotta give PowerPoint another try.
Test if PowerPoint presentations can convert into Word documents.

When corrupted files are present among them, these corrupted files may cause various errors.
Cleaning up the temporary files ensures that no corrupted files interfere with the software.
Step 1: Press theWin+Rkey combination to launch the Run dialog box.

Step 2: Select theAdd-insoption in the sidebar.
Step 3: Find theManagedropdown and click it.
Then selectCOM Add-insand punch theGo…button.

Step 4: Uncheck any add-ins that are enabled.
Step 5: ClickOKand restart PowerPoint.
When you get into this issue, you could follow the above methods.

Hope everything is useful for you!
