Monthly Archives: October 2026


Exchange server instability after updates

As originally reported here – a recent update has caused on prem exchange servers to become unstable and potentially requiring regular reboots to continue operating. At the time there was nothing about this particular problem available on line – so diagnosing the problem took extended amounts of time and effort while there was radio silence […]


“The handle is invalid” when logging into Windows server console

This was the error which was presented when investigating an “unrelated” issue with a Windows 2016 virtual machine. Various services that should have been running on the affected VM were not operating correctly Using remote access tools and vmware console – logon failed but referenced “Other Person” despite using the domain credentials which should permit […]