Windows 10 - New Clock and Calendar

If you're using the latest Windows 10 Technical Preview build (9901) there's a new and hidden clock and calendar.

To unlock it:

1. Open registry (regedit.exe)
2. Navigate to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\ImmersiveShell
3. Create a new DWORD (32-bit) and name it UseWin32TrayClockExperience
4. Set the value to 0
5. Reboot

Will now see a redesigned clock and calendar.

Before

After

How to delete "ghosted" network adapters on Windows

It may happen for some reason, like you've changed an hard drive from one machine to another (or even on Virtual Machines) that when you try to enter an IP Address you get the error above.
This usually happens because the previous network adapters are still available on the operating system, although their hidden.

To fix this issue, follow this steps:

1. Login on the machine
2. Open a command prompt as administrator
3. Execute the command: set devmgr_show_nonpresent_devices=1
4. On the sime command prompt, execute the command: start devmgmt.msc
5. On Device Manager, click on View -> Show hidden devices
6. Go to Network Adapters and delete the greyed out or "ghosted" network adapters and restart the machine

Notes: If for any reason the pass 3 doesn't work, you need to create a System Variable called DEVMGR_SHOW_NONPRESENT_DEVICES and with value 1 and than open Device Manager.