Hi Jo,
You don't need to reboot OS, only Splunk Forwarder.
Sorry but examining your information, I see that you're running TA_Windows on a Unix system! TA_Windows must be installed on the target Windows server to monitor, not on the Splunk Enterprise Server!
You can deploy it manually or using a Deployment Server, anyway it must run on a Windows server!
See very carefully documentation at https://docs.splunk.com/Documentation/Splunk/6.6.1/Data/WhatSplunkcanmonitor
Bye.
Giuseppe
P.S., if you're satisfied by my answer accept it.
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