建议你尝试删除2016之前的激活信息。以下为官方论坛解决CAD2012 on Win7的措施,删除相应目录即可Win10 下的cad2016需自行查找位置(目录再激活错误时生成,或许是为了防止非法激活。):
Thank you for posting that solution to the forums; it is the only one I have found for this error message in the 2012 products.
Here are the paths for those files in Windows XP and Windows Vista, as well:
On Vista or Windows 7:
C:\ProgramData\FLEXnet\adskflex_00691b00_tsf.data
C:\ProgramData\FLEXnet\adskflex_00691b00_tsf.data.backup