Go ahead and right-click on the protected sheet (a locked sheet will often have a padlock icon attached to the name) to open the context menu. com If you don’t have permission to open a file or folder, you may be able to change the permissions settings. DO NOT REMOVE ANY USERS THAT START WITH 'S-1-'! These are the XP user accounts and groups that have access to the files as well. On your Mac, select the item, then choose File > Get Info, or press Command-I. Also, know how to recover Word document on Mac if you have lost the file due to any reason. Select the files you want to restore and click on the red cross with the name 'Restore'. This may happen because the file is open in Excel or other program, or this folder doesn't have write permissions for you.This may occur for the following reasons: The document is damaged or incompatible with the current version of Excel. Setting Mac File Permissions Using Finder.You do not have permission to open excel mac