Checks before adding a new Domain Controller
Ensure that you can resolve the IP addresses of the existing domain controllers and that you can reach the DCs over ports 445 and 389 Verify the Healthy Replication of…
Migrating Active Directory Certificate Service (ACDS) from Windows Server 2012 R2 to Windows Server 2019
CA server name is not the same as the FQDN of the server hosting the CA. Default common name naming scheme in ADCS is <Domain Name>-<CAHostname>-C . For example, Contoso-w2k12r2-CA…
Nessus scanning on Windows Servers with Symantec Endpoint IPS enabled
SEP with IPS enabled was blocking Nessus scanning. Solution: I had to add the host IP of Nessus scanner on the IPS excluded hosts and re-run the scan. Solution: I…
Reading on Active Directory
AD and Disaster Recoveryhttps://www.reddit.com/r/sysadmin/wiki/ms/activedirectorydisasterrecovery What does DCDIAG do...? https://docs.microsoft.com/en-us/archive/blogs/askds/what-does-dcdiag-actually-do How Active Directory Authentication Works? http://www.rebeladmin.com/2018/06/active-directory-authentication-works/ AD DS security is key for any environment as it is foundation of identity protection.…
Windows Firewall log file empty.
Although GPO is set properly, still the windows firewall C:\Windows\System32\LogFiles\Firewall\pfirewall.log showed blank. Solution: Provide NT SERVICE\MPSSVC account with Full Control permissions on the C:\Windows\System32\LogFiles\Firewall folder and restart the workstation or the server.
Power Shell one liner to find AD Objects
Find AD user accounts with account expiration date set, sort and display user's name and expiration date. Get-ADUser -Filter "AccountExpirationDate -ne '*'" -Properties AccountExpirationdate | Sort-Object -Property Name | Format-Table…
Unable to install PowerShell modules in Windows Server 2016?
Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -ForceError: Install-PackageProvider : Unable to find repository with SourceLocation ''. Use Get-PSRepository to see all available repositories. PS C:\Windows\system32> Get-PSRepository PackageManagement\Get-PackageSource : Unable to find…
Battling growing disk space on Windows Server 2012 R2
I have been battling Windows Server 2012 R2 disk space usage above threshold despite adding space to it. Within couple of days, it would add up 5 to 6 GB.…
Unable to access ECP after applying CU 21 in Exchange 2013
After applying CU21 on Exchange 2013, I am unable to access ECP. Error in event log:Event code: 3008 Event message: A configuration error has occurred. Event ID: b03040db26554e5aab7f6976d7878148 Event sequence:…
Copying a file from host OS to Hyper-V VM
To easily copy a file which is not an ISO from host OS to Hyper-V VM, do the following: 1. Right-click on the virtual machine, and choose the Settings command from…