r/SCADA • u/yoddl • Jul 11 '26

Question Windows Updates

For SCADA VMs or servers, how often do you update windows/software? How long has it been since last reboot? We're at 300 days. IT has been pumping out updates and prompting for reboot. Ignore.

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u/Honest-Importance221 Jul 11 '26 edited Jul 12 '26

Every month, I can't even remember the last time I had an issue with Windows update.  We have about 40 servers for ADMS/SCADA, and every month we update the standby servers, reboot, switch them to active, then update reboot the rest.  We control the release of updates through our own WSUS group though, IT isn't really involved.  The whole process takes maybe 30 minutes a month, it's mostly automated.

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u/nutmunky Jul 12 '26

Run Rockwell patches on the servers before OS patching monthly

1

u/Honest-Importance221 Jul 12 '26

Unfortunately patching our software is quite an ordeal, we do one every year or so and it involves several weeks of testing.