# Friday, July 17, 2015

I move around quite a bit and my laptop connects to Wi-Fi networks all over the world. Sometimes I return to those places and re-connect to the same network weeks or months later.

Once in a while, this causes a problem when a Wi-Fi network security credentials change and laptop's saved Wi-Fi settings continue to use the credentials I entered last time, without allowing me to enter the new credentials.

The simplest solution to this problem is to remove the Wi-Fi network from my laptop's list of saved networks Wi-Fi networks; then, re-add it. If it's not a hidden network, it should automatically appear when you are in range, even if it is not "saved".

But the option to remove a saved Wi-Fi network changes with each version of Windows and it may even be missing in some versions (I still can't find it in the Windows 10 preview I'm currently running).

However, you can use the command line to accomplish this. Here are the steps.

Open a command prompt as an Administrator. This is an option when you right-click the command prompt shortcut. It requires confirmation because you can wreak a lot of havoc as an administrator.

At the command prompt, type "netsh" and press ENTER to go into
network shell mode. The command prompt changes to
netsh>
as shown in Figure 1.

Forget-Fig1-netsh
Figure 1

At the netsh prompt, type "wlan show profiles" and press ENTER to display a list of all saved Wi-Fi networks, as shown in Figure 2.

Forget-Fig2-ShowProfiles
Figure 2 

Find the network you want to remove; then type "wlan delete profile name=<network name>", where network name is the network as listed in the last command. This must be surrounded by quotes. Spelling is important but capitalization is not. Press ENTER to remove this network, as shown in Figure 3.

Forget-Fig3-DeleteProfiles
Figure 3

That's it. You can close the command prompt or type "exit" and press ENTER to leave Network Shell Mode. I recommend not leaving and Administrator-level command prompt open in case you forget the power you have.

Here’s a summary of the steps:

netsh
 
wlan show profiles
 
wlan delete profile name=”<network name>
 

This method appears to work for Windows 7, 8, 8.1, and 10. Don’t get caught unable to connect to a wi-fi network again.

Friday, July 17, 2015 4:20:30 PM (GMT Daylight Time, UTC+01:00)
# Monday, July 6, 2015
Monday, July 6, 2015 6:22:00 PM (GMT Daylight Time, UTC+01:00)
# Monday, July 1, 2013
Monday, July 1, 2013 7:52:00 PM (GMT Daylight Time, UTC+01:00)
# Monday, September 10, 2012
Monday, September 10, 2012 6:44:00 PM (GMT Daylight Time, UTC+01:00)
# Tuesday, August 21, 2012

Last week, Microsoft released Windows 8 and made it available to MSDN subscribers.

Recognizing that more applications will make this platform more successful, Microsoft is offering free help to developers who want to build applications for Windows 8.

You can sign up for the GenerationApp program to get guidance, including free access to Microsoft architects and consultants to advise you on everything from design to getting App Store approval. There are some limitations, so check out http://tinyurl.com/30daysWin8 for more information.

Tuesday, August 21, 2012 7:53:54 PM (GMT Daylight Time, UTC+01:00)
# Monday, May 7, 2012
Monday, May 7, 2012 4:19:00 PM (GMT Daylight Time, UTC+01:00)
# Tuesday, September 27, 2011
Tuesday, September 27, 2011 3:33:52 PM (GMT Daylight Time, UTC+01:00)
# Monday, April 12, 2010

Episode 81

In this interview, Jennifer Marsman describes some of the new features of Windows 7 and how a developer can use those features to build more powerful applications.

Monday, April 12, 2010 5:27:31 AM (GMT Daylight Time, UTC+01:00)
# Saturday, February 13, 2010

You could start at the beginning and read all the way through Windows Server 2008 R2 Administration Instant Reference by Matt Hester and Chris Henley. Part 1 of the book of the book ("Getting Started") walks the reader through planning, installing and upgrading the operating system, while subsequent sections dive into details about specific areas of the software.

But a more reasonable approach is to open to the section on which you are working today. Each chapter is structured so that you can dig into the detail you need. Each topic begins with an explanation of concepts and definitions of key terms. This part is critical for someone like me, who doesn't spend his days managing servers. Experienced administrators may skip this section and jump to the detailed explanations of how to use and configure each feature of Windows Server 2008 R2. Basic functionality is described first, followed by more advanced features.

A section on Active Directory, for example, begins with a description of built-in groups, followed by a description of custom users and groups and how rights are granted. After establishing these basics, the author describes how to use Active Directory to manage groups, users and rights and how to configure this in Windows Server.

Hester and Henley write in a clear, concise style that simplifies everything they describe. Step-by-step instructions are amplified by screen shots.

The smaller dimensions of the book make it fit easily into a laptop bag, despite the 500+ pages of text.

This is a solid book for a full- or part-time network administrator to keep on hand for a quick reference or for a more detailed look into important concepts of Windows Server.


Official Book site

Saturday, February 13, 2010 8:36:46 PM (GMT Standard Time, UTC+00:00)
# Monday, December 28, 2009

In this screencast, I demonstrate some of the enhancements in the user interrface of Windows 7.

Monday, December 28, 2009 12:10:43 PM (GMT Standard Time, UTC+00:00)
# Saturday, October 24, 2009

Check out this video I produced and edited for Microsoft Architect Evangelist Brian Prince. Brian approached Windows 7 users and asked them to give their favorite feature of the new operating system.

Saturday, October 24, 2009 2:08:27 PM (GMT Daylight Time, UTC+01:00)
# Wednesday, September 30, 2009

Episode 56

In this interview, Microsoft Architect Evangelist Brian Prince describes what makes Windows 7 faster, more reliable and simpler.

Wednesday, September 30, 2009 1:16:25 PM (GMT Daylight Time, UTC+01:00)
# Monday, September 28, 2009

Episode 55

In this interview, Microsoft IT Evangelist Matt Hester describes the new features and enhancements in the upcoming Windows Server 2008 R2.

Monday, September 28, 2009 5:09:10 AM (GMT Daylight Time, UTC+01:00)