We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
2,862 Tutorials

How to fix a conflict between your Windows Firewall and router

Plus: how to download and install Microsoft .Net Framework

QUESTION I purchased Windows 7 online and have since been getting the error message: ‘To run this application you must first install one of the following versions of .Net Framework v4.0.30319'. When I get online, Internet Explorer tells me ‘Windows can't find a computer or device named http'. William Yates

HELPROOM ANSWER To fix the first issue, install the .Net Framework using Windows Update or download it manually.

The second problem suggests there is a conflict with your Windows Firewall settings and your router. Turn off the Windows Firewall (Start, Control Panel, Windows Firewall, Turn Windows Firewall on or off) and see whether that fixes the problem.

If it doesn't, reset your router to its default settings. If you have a third-party security product with a firewall, disable that as well.

See also: How to fix everything: the ultimate guide to fixing technology

Free tech support in the Helproom Forum

IDG UK Sites

Microsoft smartwatch release date, price and specs rumours: Launching within a few weeks

IDG UK Sites

Why you shouldn't buy the iPad mini 3: No wonder Apple gave it 10 seconds of stage time

IDG UK Sites

Halloween Photoshop tutorials: 13 masterclasses for horrifying art, designs and type

IDG UK Sites

Should I upgrade from Mavericks to OS X 10.10 Yosemite? What you need to know before updating to...