We have problems with “Check_MK Agent” plugin for automatic updates in windows server. After windows OS is updated the ACL’s of the plugin are lost, so the check_mk agent can not execute the plugin and a state of UNKNOWN is reported in checkmk site server.
We fixed the problem rebooting the system but after some time the issue arises again.
This is rather odd then. A clean install should work. What is especially weird is, that it stops working after some time. Maybe some third party software or antivirus is intervening?
Sorry for the delay. Let me explain again: we downloaded the agent updater plugin directly and copied to destination. We tried to register and this is the windows message we get
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