This is usually caused by a corrupt registry entery after software has been installed or uninstalled.

Fix 1:

• Use REGEDIT and go to this location:
  {code class="brush: text"}HKEY_CLASSES_ROOT\CLSID\{f81e9010-6ea4-11ce-a7ff-00aa003ca9f6}\InProcServer32\{/code}

• Default is set to nil and there may also be  a string under it called:
  
  ~~~Disabled~~~ = ntshrui.dll

• Set (Default) to ntshrui.dll and delete foreign key.

Fix 2:

• Use REGEDIT and go to this location:
  {code class="brush: text"}HKEY_CLASSES_ROOT\Drive\shellex\PropertySheetHandlers\{/code}
• You should have the following two keys:
  {code class="brush: text"}{1f2e5c40-9550-11ce-99d2-00aa006e086c} - To enable the Security Tab {f81e9010-6ea4-11ce-a7ff-00aa003ca9f6} - To enable the Sharing Tab. {/code} 
• Re-create any missing keys if necessary.