Problem: Accessing the Label tab on the Layer Properties dialog box in ArcMap is slow
Accessing the Label tab on the Layer Properties dialog box in ArcMap is slow, taking several minutes for the dialog box to display.
A large number of fonts may be installed.
Solution or Workaround
Make a backup of the Esri fonts, restore the Windows system fonts, and reinstall the Esri fonts.
Start Windows Explorer and browse to C:\Windows\Fonts.
Drag and drop all esri*.ttf files into a temporary folder.
Follow the instructions for the operating system using the appropriate link from Related Information below. If the operating system is not listed, search the Internet for "restore default fonts and <operating system>".
Drag and drop all the esri*.ttf files back into C:\Windows\Fonts. Alternatively, perform a repair installation on ArcGIS Desktop to restore the Esri fonts.