To edit finalized excel file is easy. It doesn‘t matter whether you are the file author or not. This happened to me before. I was able to back up my files from an old computer. After I transferred all of those into the new system, I cannot edit all of it. Why? Because I backed up those marked as final. I can only open those in Read-only mode. I really can’t edit anything.
I tried a lot of workaround but this is the only one that works best:
All you need to do is to open the document and then click on Windows Orb – Prepare then click Mark as Final. There you go! Now, you can edit the document anytime you want. I tried and tested this on MS Word 2007. My previous documents were created in Word 2010 but it still working perfectly on 2007 version.