Nothing happens when clicking the Edit metadata button in ArcCatalog

Description

The Metadata Editor doesn't appear when clicking the Edit Metadata button in ArcCatalog.

Cause

This is a known issue.

Solution or Workaround

1. In Arc Catalog select Tools > Options and select the Metadata tab.
   
   
2. Uncheck the following check boxes:
   
   - Automatically create metadata the first time an item in the Catalog is viewed in the Metadata tab
   
   - Automatically update metadata whenever an item's metadata is viewed in the Metadata tab
   
   
3. Re-check both check boxes.
   
   
4. Click Apply and OK.