Release Object Type
When object types have been locked, the color of the selection filter icon changes on the tool strip:
      
Release the locked object types as follows:
- Select  Selection
          Filter from the tool strip. Selection
          Filter from the tool strip.
- Select all the object types on the list by clicking the All button or by pressing Ctrl+A.
- Confirm by clicking OK.
When all the object types are selected, the color of the selection filter icon on the tool strip is:
      
