Error on Access RDP Connections

Users are experiencing issues into all RDP connections by PAM:

Error type: RdpException. 

Error message: Unable to connect to backend device. Please contact Administrator.. 

Stack trace: 

com.ca.xsuite.app.rdp3.client.handler.TCPStreamHandler.read(Unknown Source) 

com.ca.xsuite.app.rdp3.core.layer.channel.BaseITULayer.receive(Unknown Source) 

com.ca.xsuite.app.rdp3.core.layer.ITULayer.mainLoop(Unknown Source) 

com.ca.xsuite.app.rdp3.client.app.RDesktop.main(Unknown Source) 

com.ca.xsuite.launcher.a.n.run(Unknown Source) 

java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 

java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 

java.lang.Thread.run(Unknown Source) 

Cause: 

Error type: EOFException. 

Error message: . 

Stack trace: 

com.ca.xsuite.app.rdp3.core.impl.RDPInputStream.readFully(Unknown Source) 

com.ca.xsuite.app.rdp3.client.handler.TCPStreamHandler.read(Unknown Source) 

com.ca.xsuite.app.rdp3.core.layer.channel.BaseITULayer.receive(Unknown Source) 

com.ca.xsuite.app.rdp3.core.layer.ITULayer.mainLoop(Unknown Source) 

com.ca.xsuite.app.rdp3.client.app.RDesktop.main(Unknown Source) 

com.ca.xsuite.launcher.a.n.run(Unknown Source) 

java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 

java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 

java.lang.Thread.run(Unknown Source)

Inconsistent DNS responses.

After checking the settings we found out that customer's DNS were behaving inconsistently - the name resolution was intermittent so, frequently, CA PAM was unable to resolve the endpoint names to their actual addresses.

Fixing the DNS has fixed the issue.