Windows agent reported as unavailable every few minutes

[Sugarman]

Hello folks

I'm stuck on this one:
Windows 2008 (not R2) server running Zabbix agent 3.0; the server doesent run any load worth mentioning (actually only a licensemanager with attached usb dongle). Still, the Zabbix server (3.0) reports the Zabbix agent as unavailable every few minutes; after 2-3 minutes its all ok again.

In reality nothing happened on the server or service; it just runs as always. The zabbix agent doesen't log anything out of the ordinary, the Zabbix server log shows:

14819:20160415:010244.680 Zabbix agent item "vfs.fs.discovery" on host "server.x.ch" failed: first network error, wait for 15 seconds
14819:20160415:010259.687 resuming Zabbix agent checks on host "server.x.ch": connection restored
14819:20160415:010302.688 Zabbix agent item "vfs.fs.discovery" on host "server.x.ch" failed: first network error, wait for 15 seconds

This flapping will go on forever...

Does anybody have an idea what the cause of this is?

[Sugarman]

Figured it out myself. After poking around for hours and finally entering the right terms in google let this one appear:

https://www.zabbix.com/forum/showthread.php?t=28625

Disabled the floppy drive device et voila, no more hickups.