In the last week, Microsoft have published about a significant zero day vulnerability in Exchange Server - you can read about it here. This attack required a valid username and password for one of the vulnerabilities to be executed. Microsoft have advised in their security guidance to disable RemotePowerShell for non-admins. In their article on Controlling remote … [Read more...]
Setup changes for Exchange 2016 and Exchange 2019
In April 2022, Microsoft released the latest CU for both Exchange 2016 (CU 23) and Exchange 2019 (CU 12). Microsoft have the release notes for both of these in the links below if you care to read them. Exchange 2016 CU 23 Exchange 2019 CU 12 With it came one minor but potentially troubling change if you are not aware of it. You see Microsoft changed the command line … [Read more...]
Bluetooth Mouse and Keyboard Randomly Stop Responding
I've had a HP x360 laptop now for many years, and there's been a consistent problem that I've seen, but I've never taken time to investigate it. I decided recently to get stuck into figuring out what was going on and believe I've now solved it. The issue is that I've got a Microsoft Bluetooth Keyboard and Mouse. Things will be working fine and then suddenly one or both of … [Read more...]
Exchange Bug Stops Mail Delivery in 2022
A little like the Y2K bug, it's been found that Microsoft have a bug in their malware filtering service that is part of Exchange 2016 and later that only started at midnight on Jan 1st 2022. The effect of this bug is that mail delivery stops entirely IF the Malware scanning filter is being used (which by default it is). Here's a sample of some of the messages you would have … [Read more...]
How to open and search extremely large text log files
I had a situation today when working with our team, where our ConnectWise server had something go wrong overnight following an upgrade. Long story short, it filled up the disk space on the C: drive and caused things to come to a screaming halt before we woke up this morning! We cleared out some disk space by removing other files first up (note always leave SOMETHING … [Read more...]