Connection to license server FAILED

Hi all,

I am a new cryoSPARC user. We recently installed cryoSPARC v3.2.2 in the master node. When doing Movies Import I got an error response

“Error connecting to cryoSPARC license server. Checking local license file. Could not find local license file. Please re-establish your connection to the license servers.”

I checked “cryosparcm status” and found a warning that my active license could not be verified because the connection failure to license server.

When I do “curl” I got a response that said “curl: (28) Failed to connect to port 443 after 278754 ms: Connection timed out”.

Appreciate any help. Thanks


Welcome to the forum @zhenhua .

Firewall or proxy settings on the master computer or on the network may prevent the connection.

What happens when you type:

  1. curl

  2. curl

on the command line?

Hi wtempel,@wtempel

  1. curl
    “curl: (28) Failed to connect to port 443 after 278805 ms: Connection timed out”

  2. curl
    “curl: (28) Failed to connect to port 80 after 278673 ms: Connection timed out”

Could you give me some specific suggestions on firewall or proxy settings? Thank you

Best regards,

Do you have any indication that this computer allows outgoing connections to the internet, like browsing web pages hosted outside your organization?
Can you contact your local IT support for help?

Hi wtempel,
This node could not allow outgoing connections! I will contact my local IT. Thank you!

Hi all, in my case, the command “module load httpproxy” should be used before starting up cryoSPARC. License server connection failure is fixed when the needed ports are opened. Many thanks to @wtempel

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