解決：經爬文一番後，有答案。就是在Autocad資料夾直接加入使用者或所有人均可使用之權限。這就可正常使用。
::For a Domain:::
On the selected folders, RC>Properties>Security>Advanced>Change Permissions
- Add Domain Users and give Full Control
On the selected Registry Keys, RC>Permissions>Security>Advanced
- Add Domain Users and give Full Control
:::For no Domain:::
On the selected folders, RC>Properties>Security>Advanced>Change Permissions
- Add All Users and give Full Control
On the selected folders, RC>Properties>Security>Advanced
- Add All Users and give Full Control