Windows 11: release information

Windows 11, version 21H2
(OS build 22621)

Windows 11, version 21H2 (original release)
(OS build 22000)

External links
Windows 11 release information

PowerShellTip: Get Get AD Domain Controllers operating system

Get-ADDomainController -Filter * | Select-Object Name, OperatingSystem

PowerShellTip: Get AD Global Catalog status from all DC

 

[System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain().DomainControllers | %{"$($_.Name) : $($_.isglobalcatalog())"}

Happy SysAdmin Day!

 

Multiple Security Updates Released for Exchange Server - March 2021

Microsoft released patches for multiple different on-premises Microsoft Exchange Server zero-day vulnerabilities The vulnerabilities exist in on-premises Exchange Servers 2010, 2013, 2016, and 2019.

More info:
HAFNIUM targeting Exchange Servers with 0-day exploits