Tag: Security
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VMware vCenter Server Appliance: Sequence Wrong Size for a Certificate when replacing SSL Certificates
Hi! Just a quick one today. I was replacing a certificate for a customer’s VCSA today with one from their internal CA when I hit the error “Sequence Wrong Size for a Certificate”. To clarify, I had generated a CSR from the VCSA, requested the certificate from the CA, downloaded this and the certificate chain…
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Workaround: KB5005043 / Security Update August 2021 Won’t Install on Windows Server 2016
I’ve found a lot of clients are having the same issue with their Windows Server 2016 servers and getting KB5005043 to install. It seems that Microsoft might not be identifying this patch correctly as it doesn’t show within Windows Update for most and then downloading the patch manually from the Microsoft Catalog results in the…
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Microsoft Exchange Server 2010/2013/2016/2019 – Unable to connect to OWA/ECP “protectionCertificates.Length<1"
Microsoft have done it again, with another security update, they’ve broken a lot of environments, I wish there was a better communication method than finding a small footnote on a blog post that a patch was going to potentially break environments. Many organisations have automated patch workflows that end up catching people out when this…
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Microsoft Azure Sentinel Log Analytics- Not Collecting Syslog
Today I was asked to advise on why a particular firewall was unable to send its syslog data to Azure Sentinel and found something rather interesting I thought would be useful to share. Firstly I validated that the deployment steps had been followed and that the VM Extension for Linux had been attached to the…
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Microsoft Exchange Server KB5000871: Unable to Apply “owaauth.dll”, 400 Bad Request & Server Error in ECP application
Hey, so I’ve been going through all our customers this week that’ve been identified as potentially at risk by the latest Exchange Server vulnerabilities (full details straight from Microsoft here) and as you can expect from a rapid response release, it’s not quite consistent when installing. Please be painfully aware of the Microsoft installation notes…
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Solving the Exchange C: Drive\ Resource Mystery
Now you may have had Exchange in your environment for a while, you may even have had a DAG in place. You followed your best practise guidance of not installing the application on the C drive yet somehow your C drive is growing at a much faster pace than any other servers. Sound familiar? Read…
Michael Paul | @micoolpaul 