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How to Fix : AutoCAD | The security system (Softlock license manager) is not functioning or is improperly installed for Windows
This error can happen if you have a corrupted installation of an Autodesk program or if the License model has been changed in the registry. In most cases a clean uninstall and reinstall should correct the issue. However if this issue is not resolved then delete the licensing files and reactivate the product.
License files location ;
For Windows 10 / Windows 8 / Windows 7 / Windows Vista ;
C:\ProgramData\FLEXnet\adskflex_00691b00_tsf.data
C:\ProgramData\FLEXnet\adskflex_00691b00_tsf.data.backup
For Windows XP ;
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_00691b00_tsf.data
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_00691b00_tsf.data.backup
This error can happen if you have a corrupted installation of an Autodesk program or if the License model has been changed in the registry. In most cases a clean uninstall and reinstall should correct the issue. However if this issue is not resolved then delete the licensing files and reactivate the product.
License files location ;
For Windows 10 / Windows 8 / Windows 7 / Windows Vista ;
C:\ProgramData\FLEXnet\adskflex_00691b00_tsf.data
C:\ProgramData\FLEXnet\adskflex_00691b00_tsf.data.backup
For Windows XP ;
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_00691b00_tsf.data
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_00691b00_tsf.data.backup