The "171h" error is usually a temporary roadblock, not a permanent failure, often resolved by updating the USB driver. If you'd like, I can:
or unauthorized fix for version 17.1h, please be aware that these often contain malware or cause significant data corruption in professional project files. Using the official trial or licensed version is recommended to ensure data integrity. Could you tell me more about the you're having? For example: Are you getting a specific error message licensing problem Are you trying to make it compatible with a newer version of AutoCAD? covadis 171h fix