Microsoft has resolved an issue that was stopping June's security update from installing on some Windows Server 2016 systems. If you run Server 2016, here's the short version and the lesson worth taking from it.
What happened
The June 2026 security update (KB5094122) was failing to install on Windows Server 2016 machines that hadn't first installed the May 2026 update (KB5087537). Microsoft has now fixed the problem, so affected servers should be able to update successfully.
Why this matters
It's a small issue, but a telling one. Modern Windows updates increasingly assume a prerequisite update is already in place — skip a month and a later update can simply refuse to install, quietly leaving a server unpatched. On a domain controller or line-of-business server, an update that silently fails to apply is a security gap you may not notice until something goes wrong.
What to do
- Check your Server 2016 estate updated successfully this month — don't assume it did.
- Keep update history continuous. Where a server has fallen behind, bring it up to date in sequence rather than jumping to the newest patch.
- Monitor update status centrally so a failed install is flagged, not missed.
This is exactly the sort of thing that's easy to overlook when servers "seem fine." Our managed support keeps update status monitored across servers and workstations, so failures get caught and fixed rather than sitting unnoticed. Get in touch if you'd like us to take it off your hands.
Source: Microsoft confirms Recycle Bin bug on all supported Windows releases — BleepingComputer