When running the software, it becomes unresponsive and freezes your computer. When you restart the computer and you try to restart AutoCAD, the splash screen starts up and then closes down with no apparent error message.
Solution
1. First, verify the Licensing service is running.- Access the Windows Run box
- Type Services.msc and press enter
- Search for FLEXnet Licensing Service or FLEXnet Licensing Service 64
- Make sure the services are started and running. IF they are disabled, they will stop the program from starting.
2. Rename the following file by adding a .bak extension at the end of the filename.
Windows XP:
C:\Documents and Settings\All Users\Application Data\FLEXnet\adskflex_*_tsf.data
Vista/Windows 7:
C:\ProgramData\FLEXnet\adskflex_*_tsf.data
- This file contains all activations for all 2010 and 2011 products. You will need to re-register all your products if this file is renamed/deleted.
- Restart AutoCAD and it will automatically re-register via Register Today and it will start up as expected. A new adskflex_*_tsf.data file will be created when you re-register your product.