Simply unplugging the USB dongle and plugging it back into a different USB port can sometimes reset the handshake between the computer and the license, instantly fixing the 171h error. 2. The Driver Solution (The Most Likely Culprit)
If you receive specific "missing .dll" or "covtextes17.arx error" messages, these files may also be restored through the same method. covadis 171h fix
While the mechanicals are bulletproof, the electronics often predate the internet. The original relays and contactors can become sticky. If your machine has intermittent starting issues, don't blame the motor; look at the contactor points. They are likely carbonized and pitted from decades of arcing. Simply unplugging the USB dongle and plugging it
| Practice | Why It Matters | |---|---| | Keep Windows, AutoCAD, and COVADIS updated | Service packs and hotfixes address known compatibility issues | | Maintain only one COVADIS version per workstation | Multiple versions cause conflicts and unpredictable behavior | | Back up custom settings before any major update | Prevents data loss and reduces downtime during reconfiguration | | Use AutoCAD LT alternatives only with confirmed support | COVADIS does not run on AutoCAD LT at all | | Check compatibility charts before upgrading AutoCAD | Prevents mismatches that force emergency downgrades | While the mechanicals are bulletproof, the electronics often
Open your patch or fix directory containing the corrected .dll binaries and registry scripts ( .reg ).
Versions 2021, 2022, 2023, and 2024 (64-bit architectural releases).
