Restart the Office application and see if you can select and modify text without issues.
Disabling the ‘Restrict Editing’ option via the Development tab. Then, click on Restrict Editing to disable the option and resolve the issue. Return to the actual document and click on the newly appeared Developer tab. How do you fix modification is not allowed because the selection is locked? How do I reinstall my apps after reset?.Can I reinstall Office after System Restore?.How do I reinstall Microsoft Off after System Restore?.How do I activate my Microsoft Office Professional P with a product key?.How do I change the selection that is locked in Word?.How do you fix modification is not allowed because the selection is locked?.