Exchange 2013 Back Pressure Issue
Exchange Back pressure is real. I have setup two separate domains in my lab (northwindtrader.com and constoso.com). On northwindtrader.com domain I am testing migrating Exchange 2013 CU21 to Exchange 2019.…
Not able to login to Outlook/OWA and Exchange 2013 CU21
Outlook/OWA will prompt for password but will not authenticate.On Exchange Server security event log:Event ID: 4625, user login failure. Unknown username and bad password, User not allowed to logon at…
Skype for Business 2019 installation error while preparing current forest
Enabled-CSAdForest Failed Error: command execution failed: Active Directory operation failed on "dc.abc.com". You cannot retry this operation: " Directory object not found 000028D:NameErr: DSID-03100288, problem 2001(NO_OBJECT), data 0, best match…
Unable to remove any roles from Windows Server 2012 R2: WinRM pool corrupted or missing
I am in the process of migrating Windows Server 2012 R2 to Window Server 2019. While trying to remove a CA role to migrate to Windows Server 2019, server threw…
Upgrading ESXi from 6.7 U3 to 7.0
There are two ways you can upgrade ESXi hosts:- Upgrading ESXi using ESXCLI- Upgrading ESXi via VMware LifeCycle Manager. VMware Update Manager has been replaced with VMware Lifecycle Manager in…
Upgrading VMware vSphere from 6.7 U3 to vSphere 7
vSphere 7 went GA on April 2, 2020 and it is a major release. I run ESXi on a single Dell R720 server and running nested ESXi hosts. Here is a link to my lab. Now checking VMWare compatibility…
CentOS: Unable to save connection. No such method ‘Update2’
Environment: CentOS 7Using nmtui to configure ip address for an interface Issue: Fails to save the IP configuration on an interface with the following error:Unable to save the connection. No…
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…
Gracefully shutting down Brocade VDX Switches
Note on gracefully shutting down Brocade VDXs 6740s in Logical Chassis Mode Backup the configurationcopy running-config ftp://username@ipaddress/path/filenameor use Putty but enable the session logging. To avoid the page break use…
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…