Microsoft has released a patch for the WannaCry Ransomware. Please download this on each of your machines.

Here are the patches to fix it:


Windows XP SP3
http://download.windowsupdate.com/d...7d5023bbb23c0dc633e46b9c2f14fa6ee9dd.exe

Windows Vista x86
http://download.windowsupdate.com/d...b3d77ba5599764c296075a796c16a85c745c.msu

Windows Vista x64
http://download.windowsupdate.com/d...6ba2b2b98b2144b50f88baf33a5fa53b5d76.msu

Windows 7 x64
http://download.windowsupdate.com/d...efaa02e2058dcd965702509a992d8c4e92b3.msu

Windows 7 x86
http://download.windowsupdate.com/d...4d3971bb58ae4bac44219e7169812914df3f.msu

Windows 8
http://download.windowsupdate.com/c...41d2e94197c2dca4457f1b895e8f632b7f8e.msu

Windows 8.1
http://download.windowsupdate.com/c...b9ca5a123a844ed793e0f2be974148520349.msu

Windows 10
http://download.windowsupdate.com/c...b81ee08c3bb0a8ab2c5ce6be5b35127f8773.msu

Windows 2003 x86
http://download.windowsupdate.com/c...caf6e7ee6f43abe4b386cb1d26b3318693cf.exe

Windows 2003 x64
http://download.windowsupdate.com/d...8723f246145524b9030e4752c96430981211.exe

Windows 2008
http://download.windowsupdate.com/d...6ba2b2b98b2144b50f88baf33a5fa53b5d76.msu

Windows 2008R2
http://download.windowsupdate.com/d...efaa02e2058dcd965702509a992d8c4e92b3.msu

Windows 2012
http://download.windowsupdate.com/c...51d29cb4fd880948f5204d54721e64c9942b.msu

Windows 2012R2
http://download.windowsupdate.com/c...b9ca5a123a844ed793e0f2be974148520349.msu

Windows 2016
http://download.windowsupdate.com/d...596f88577ab739cade1d365956a74598e710.msu

Quote
The NHS has been hit as part of a global cyber-attack that threw hospitals and businesses in the UK and around the world into chaos.

The unprecedented attack on Friday affected 12 countries and at least 16 NHS trusts in the UK, compromising IT systems that underpin patient safety. Staff across the NHS were locked out of their computers and trusts had to divert emergency patients.

...
The same malicious software that hit NHS networks attacked some of the largest companies in Spain and Portugal, including phone company Telef?nica, and has also been detected on computers in Russia, Ukraine, Taiwan and eight other countries.

In the UK, computers in hospitals and GP surgeries simultaneously received a pop-up message demanding a ransom in exchange for access to the PCs.
Source - The Guardian