When your computer boots up, the desktop looks different with some icons missing.  If Winidows has any trouble loading a profile, it will load a temporary substitute profile.  To fix this:

1. Start regedit and browse to the following Key:
HKLM\Software\Microsoft\Windows NT\CurrentVersion\ProfileList

2. The profile in question will appear twice, one of which has been renamed with the .bak extension

3. Rename the one without the .bak extension (this is the temporary substitute) with another extension such as .sub

4. Remove the .bak extension from the original profile.

5. Within the original GUID key (now without the .bak extension) is a  DWORD value “State” which is set to “8100.”  Remove the 8 so the value is now “100.”

6. Close the registry editor and reboot.

This is usually resolved by changing settings within Acrobat.  However, in some cases, a modification to the registry will resolve this (no rebooting is required.)

HKCU/software/microsoft/internet explorer/main/TabProcGrowth

Change value from 0 to 1