Can't activate Windows 0x8007232B or 0x8007007B

What:

Windows Server 2012 Standard

Problem:

Wile attempting to activate Windows you get the following message:
Error: 0x8007232b
Description:
DNS name does not exist.

Remove previous Microsoft SQL backups automatically

What:

Windows Server 2008R2 with SQL Server 2005

Problem:

Every time backup runs it creates new .bak file, old backups are never removed.

Free alternative to TeamViewer or Log me in

What:

Windows, Android, iPhone

Problem:

You need a free remote control application for personal or commercial use.

Restore deleted SRV DNS records in Windows 2012

What:

DNS in Windows 2012

Problem:

SRV records were mistakenly deleted, how to recreate it?

Windows update cannot currently check for updates because the service is not running

What:

Windows 7

Problem:

Windows update cannot currently check for updates because the service is not running. You may need to restart your computer.

Spiceworks can't connect to some of the computers via WMI

What:

Spiceworks installed on Windows 7

Problem:

We couldn't connect to this device due to the following error: No open ports for this device were found to be responding.

Revers DNS entries are not updating, Windows 2012 R2

What:

Windows 2012 R2 Domain Controller with DHCP, DNS

Problem:

DNS PTR records are not updating when DHCP is installed on the domain controller.

Ubuntu, keyboard layout switches to English US after a restart

What:

Ubuntu 14.04

Problem:

Greeter screen has keyboard layout selection icon: US and UK, even though there is only UK keyboard added on the system. Keyboard layout also switches to English US after a reboot, I have to click on language icon and select UK to make it work.

Reset TeamViewer Host password remotely

What:

Windows desktop with TeamViewer Host service installed

Problem:

You need to reset TeamViewer password for multiple computers.

Huge DHCP log folder filling up C drive, event id 1016

What:

DHCP server on Windows 2012

Problem:

C drive on the server is gradually filling up, eventvwr shows below error.
Event ID: 1016
The DHCP service encountered the following error when backing up the database: An error occurred while accessing the DHCP database. Look at the DHCP server event log for more information on this error.