When I open autocad is loaded but when was this opening closes and get me the message: "the security system (softlock license manager) is not functioning or is improperly installed.". Please I need help.
This is most certainly a file permissions problem. Make sure you give Everyone full rights to the following folders/files:
On Vista or Windows 7:
C:\ProgramData\FLEXnet\adskflex_*.data
C:\ProgramData\FLEXnet\adskflex_*.data.backup
On Windows XP:
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_*.data
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_*.data.backup
Worst case, you might need to delete these files and reactivate your product. Make a backup first.