cdm probe giving communication error

Document ID : KB000117842
Last Modified Date : 19/10/2018
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Cannot access cdm probe gui from Infrastructure Manager
Each time the cdm gui is clicked communication error is thrown and all the setup values are blank.Issue seen with cdm probe on linux server
Other probes working ok on same server 
UIM 8.5x
cdm 6.30
Ensure robot is 7.91 version or higher on the affected robot where cdm probe is not working 

Add below key in controller section of controller on this robot via raw configure 

reuse_async_session = 1 

Restart the robot 

Note:probe_config_get callback fails every other time. To implement the fix, add the new key reuse_async_session = 1 to the controller section of robot.cfg. 
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