What should I do if my PPT suddenly becomes read-only and cannot be saved?

Because the PPT read-only protection mode is set. The solution is as follows:

1. First, you need to open the PPT presentation in read-only mode. and click the File option above the document.

#2. Select information in the drop-down menu bar to enter the new interface.

#3. After the information interface, you can see a protect presentation option below, click it.

#4. After clicking, click to always open in read-only mode and release this mode.

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