Change the number of times the office can be undone

Click "file"> "option"> "advanced"> "Maximum number of cancelable times (x)" in the "edit" option. The maximum PPT value is 150, and the maximum viso value is 99.

It is difficult to modify the Word and Excel files, but they are 1000 times by default.

Run the command -----> enter "Regedit" ----> Click OK to open the Registry Editor and find HKEY_CURRENT_USER \ Software \ Microsoft \ Office \ 15.0 \ word \ options

Right-click the blank window on the right, and select the 'new DWORD value' command from the shortcut menu,

Name it "undohistory", double-click the new value, and select the "decimal" radio button in the base area of the "Edit DWORD Value" dialog box that appears, then in the "value data" text box on the left side

Enter "30 ". Click "OK" and restart the computer. In this way, the maximum undo count in Word is changed to 30.