Use this when you click CAM Assist in Siemens NX and the CAM Assist window never appears, or a Running CAM Assist progress window shows briefly and closes. The usual causes are a message you dismissed, sign-in or connection problems, or a damaged install.
Did NX show a message first?
CAM Assist checks a few things before the window opens. Each stops it with a message:
| Message starts with | See |
|---|---|
| "CAM Assist requires the NX solid modelling licence" | Which Siemens NX licenses does CAM Assist need? |
| "The active document must be saved" | Save the part in Siemens NX. Clicking No stops CAM Assist without another message. |
| "Please review your setup(s). No user selection found for geometry to machine" | CAM Assist doesn't find my setups or stock in Siemens NX |
| "Please call CAM Assist with a part" or "…from the Manufacturing application" | CAM Assist is missing in Siemens NX |
"Couldn't clean up old demo part copies." doesn't stop CAM Assist. See Open a demo part in Siemens NX.
Does the progress window close with no message?
If the progress window closes on Waiting for SDK, Waiting for user authentication... or Establishing a connection..., CAM Assist couldn't start its window, sign you in, or reach CloudNC. NX doesn't show a message for these.
- Check your internet connection, and that your firewall or proxy allows CAM Assist to reach CloudNC. It needs outbound HTTPS on port 443, with HTTP/2, to
auth.cloudnc.com,api.cam-assist-gateway.cloudnc.comandui.cam-assist-gateway.cloudnc.com. For GovCloud, useauth.us-gov.cloudnc.com,api.cam-assist-gateway.us-gov.cloudnc.comandui.cam-assist-gateway.us-gov.cloudnc.com. - Check you can sign in to your CloudNC account. CAM Assist opens the sign-in page in your browser. See Sign-in problems.
- Click CAM Assist again.
- If it still closes, reinstall CAM Assist for your NX version. See Install CAM Assist for Siemens NX.
If sign-in fails, the sign-in page stays open in your browser and the CAM Assist window doesn't open.
Does it say "Unexpected error when opening CAM Assist dialog"?
Unexpected error when opening CAM Assist dialog.Please ensure you are running the latest version of the CloudNC CAM Assist add-in and restart the application.
- Install the latest CAM Assist for your NX version. See Install CAM Assist for Siemens NX.
- Restart NX.
- Click CAM Assist again.
The same message can name Demo part or About instead of CAM Assist.
Still not working?
If you've checked all of the above, contact CloudNC support. Say which step the progress window showed last, and include the part file and the log files from %ProgramData%\CloudNC Ltd\CAM Assist\logs. Each CAM Assist session has its own subfolder there.