Windows event log problems

[aaron.t...@total.care]

So i have noticed over the last few days that some of my Jenkins slaves are continually reporting in the Windows Event Log the following:

(Information) Service started successfully

8:44:04

8:43:58

8:43:51

8:43:44… and so on

 

(Information) Starting C:\Program Files (x86)\Java\jre1.8.0_91\bin\java.exe -Xrs -jar "c:\Jenkins\slave.jar" -noCertificateCheck -jnlpUrl https://---------------------------/computer/D----------------------/slave-agent.jnlp -secret 

8:44:04

8:43:58

8:43:51

8:43:44… and so on

 

(Warning) Child process [5188 - C:\Program Files (x86)\Java\jre1.8.0_91\bin\java.exe -Xrs -jar "c:\Jenkins\slave.jar" -noCertificateCheck -jnlpUrl https://---------------------/computer/---------------------/slave-agent.jnlp -secret --------------------- finished with -1

8:44:04

8:43:58

8:43:51

8:43:44… and so on

 As you can see this is happening every 20 - 40 seconds.  

As far as I can tell Jenkins is working properly and contacting the slaves, as well as running the jobs.  

Jenkins Slave log shows the following:

INFO: Connecting to 

Jan 19, 2017 5:41:32 AM hudson.remoting.jnlp.Main$CuiListener error

SEVERE: The server rejected the connection: None of the protocols were accepted

java.lang.Exception: The server rejected the connection: None of the protocols were accepted

at hudson.remoting.Engine.onConnectionRejected(Engine.java:366)

at hudson.remoting.Engine.run(Engine.java:338)

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main createEngine

INFO: Setting up slave: 

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main$CuiListener <init>

INFO: Jenkins agent is running in headless mode.

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main$CuiListener status

INFO: Locating server among [https://]

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main$CuiListener status

INFO: Handshaking

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main$CuiListener status

INFO: Connecting to jenkins.

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main$CuiListener status

INFO: Trying protocol: JNLP3-connect

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main$CuiListener status

INFO: Server didn't accept the handshake: Disabled protocol:Protocol:JNLP3-connect

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main$CuiListener status

INFO: Connecting to jenkins.

Jan 19, 2017 5:41:38 AM hudson.remoting.jnlp.Main$CuiListener status

 Some information has been edited, i have removed server names, ports, and URL's

What does it mean to be running in headless mode?

Yes, i can read that protocols where rejected, how do i fix that?

Any help would be appreciated, 

Thanks.