FIX: DNS Manager fails with error: Access was denied.

Scenario: When you launch DNS Manager console application on your local site Domain Controller server, it will result in below error message.  You notice this behaviour when your domain controller hasn’t communicated with your PDC for a long while (say for 10-15 days), you have your server restarted during this time. During this issue its […]

Fix: The following Domain Controller could not be contacted – A local error has occurred.

Scenario: You attempt to launch the Active Directory Management Console – Active Directory Domains and Trusts, on your domain controller in a different AD site,  you’ll be notified with the below error: —————————Active Directory Domain Services————————— The following Domain Controller could not be contacted: USA-DC01.mylab.lan. A local error has occurred. —————————OK—————————   Fix: If your […]

Choosing right capacity External Memory Card for your devices and use cases

This article helps you build understanding on which memory card to choose among currently available MicroSD, MicroSDHC and MicroSDXC. Confirm Compatibility Before inserting your SD memory card, confirm the device is compatible with the SD standard by locating an SD logo on the device or referring to the device’s user manual or manufacturer information. The […]

Setup or Migrate Postfix SMTP relay server on CentOS 6.5

Scenario: You have a External SMTP relay host configured on older and physical Linux box which you would like to migrate to CentOS host in a virtualized environment. The older Linux box running on Ubuntu 6.06 + Postfix 2.2.10.  You want to migrate it to a virtual machine running CentOS 6.5 + Postfix 2.6.6. OS […]

Setup or Migrate Bind Name Server Role on CentOS 6.8

Scenario: You have a External Name Server configured on older and physical Linux box which you would like to migrate to CentOS host in a virtualized environment. The older Linux box running on Ubuntu 6.06 + BIND 9.3.2-P2.1.  You want to migrate it to a virtual machine running CentOS 6.8 + BIND 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6. OS and […]

Disabling Network Location Discovery stops Windows Systems from Pinging

Scenario: To Turn off the Network Location wizard for users, you make below changes to the Network Sharing Settings since then your Windows Systems become not responsive to the Ping command. However, RDP and C$ Drive access still works fine. Enables “Turn off file and printer sharing” for Domain (current profile)   Solution: To let […]

FIX: Arrow Keys Navigation does NOT work in Excel

Issue: The arrow keys navigation does not work in Excel application on your system. The same arrow keys navigation just works fine in other applications. Solution: You probably have the Scroll Lock special key pressed/enabled on your keyboard which causes this behaviour.  To fix click on Scroll Lock special key to release/unlock/disable it. The Scroll […]