Wednesday, 28 June 2017

To protect against WannaCry, Petya or similar viruses

These viruses use the “SMB v1.0” protocol in Windows. This protocol is redundant in Windows 7, 8, 8.1 & 10 and can be disabled to limit the spread of these viruses.

The SMB v1.0 protocol is not redundant in Windows XP. If you are still using Windows XP you should seriously consider upgrading your PCs as soon as possible.

How to protect yourself:

If using Windows XP:
a.    Make plans to replace the PC as soon as possible

b.    Download and install this update from Microsoft -

If using Windows 7, 8, 8.1 or 10:
a.    Run Windows Updates and install any required updates

b.    Remove SMB v1.0 from your computer, using "Programs & Features" from within Control Panel (See for easy to follow instructions)

c.  Run this very small, and very quick, batch file which will create a small file on your computer. This tells the virus not to run. (Save the file to your PC, then right-click it and choose "Run as Administrator"

If you have a Server and your PC is part of a Domain then the chances are high that you have an IT Dept to carry out this work. They can create “Group Policies” to automate these processes by following the instructions at

If you are at all unsure how to carry out these operations please call us on 01257 429216.

We can do this work remotely at a cost of £30.00 for the first PC and only £20.00 for each subsequent PC (all prices are ex-VAT). 
(Free of charge for clients with a Support Contract, of course.)

In addition, you should have a reputable anti-virus programme, which is updated regularly. No anti-virus software is 100% accurate, but some are better than others. We supply and install Webroot Endpoint Protection. Please call for details.

The best anti-virus is your own common sense. Don't click on links or open attachments from any email that looks even very slightly dodgy. You can always call us for free advice if you are unsure.

At the end of the day, if you have become infected, recovery is possible provided that you have a good backup of all data. The backups, once created, must be kept away from the PC, otherwise the virus may also infect your backup.

If you use a single hard drive for backup it's not going to work if that hard drive is permanently connected to the computer. It is better to use two, or more, hard drives which are swapped each day.

The same is true of tape backups. This is older technology but still extremely useful as several tapes will usually be used in rotation.

Cloud Backup remains the best option, as your backup data is held away from your computers, as well as being away from your premises. The cost depends on the amount of data that you need to backup, starting at £10.00 per month. Ask us for further details.

Call us now on 01257 42 92 16 
or see our website at

Keeping IT Simple!

The IT Dept offers computer support services in Lancashire, including Monthly On-Site or Remote Support Contracts; Secure Online Data Backup; Domain Hosting; Server and Desktop Sales; Software Supply & Installation. We cover all of Lancashire, including Chorley, Preston, Blackburn, Darwen, Bolton, Wigan, Blackpool, etc.
© Michael Donkin 2017