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Two commands to fix Internet connectivity

Dave Farquhar Windows September 20, 2011August 21, 2016antivirus, command prompt, malware, Microsoft Security Essentials, vista, VPN, windows 7

I can think of two times someone has asked me to fix their computer when it has suddenly lost the ability to connect to the Internet. Assuming there’s nothing wrong with the modem or the network card, the problem usually comes down to something messing with either the TCP/IP stack or the Winsock. Security software frequently does this, as does malware. A few years ago, I briefly worked for an ISP that provided a security suite based on F-Secure, and that program was notorious for breaking the Winsock.

Here’s the simple fix.
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Dave Farquhar

David Farquhar is a computer security professional, entrepreneur, and author. He started his career as a part-time computer technician in 1994, worked his way up to system administrator by 1997, and has specialized in vulnerability management since 2013. He invests in real estate on the side and his hobbies include O gauge trains, baseball cards, and retro computers and video games. A University of Missouri graduate, he holds CISSP and Security+ certifications. He lives in St. Louis with his family.

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Microsoft: No x86 apps for ARM

Dave Farquhar Hardware September 19, 2011September 18, 20111990s, acer, amd, ancestor, android, apple, DEC, IBM, intel, Intel Atom, IOS, power savings, Token Ring, unix, vista, windows 2000, windows 7, windows 8, windows me, windows nt, x86

So, The Register reports that Windows on ARM will not have compatibility with apps compiled for x86. Intel has been saying this for a while, while Microsoft has been mum. So now we know.

There are arguments both for and against having an x86 emulation layer.
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Dave Farquhar

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Happy Patch Tuesday, September 2011

Dave Farquhar security September 13, 2011Adobe Reader, code execution, excel, firefox, macintosh, Microsoft Office, office 2007, oracle, Patch Tuesday, pdf files, SQL, toolkits, unix, vista, vulnerability, Windows Server, Windows Server 2003, Windows XP

Microsoft has five updates and Adobe has two for us on this fine Patch Tuesday, in addition to a patch Mozilla pushed out for Firefox last week.

Don’t get too complacent if you run something other than Windows. If you run Microsoft Office on a Mac, or Adobe Reader or Acrobat on a Mac, or Adobe Reader on Unix or Linux, you’re vulnerable. The vulnerabilities in those affected products are more serious than the vulnerabilities for Windows. So keep that in mind. Don’t be smug about security. It’ll bite you.

Dave Farquhar

dfarq.homeip.net

Microsoft sold 400 million Windows 7 licenses; what does it mean?

Dave Farquhar Software, Windows July 13, 2011November 19, 2018android, apple, apple ii, IOS, os x, piracy, proprietary unix, Steve Ballmer, unix, vista, windows 2000, windows 7, windows 8, windows 98, windows me, Windows Vista, Windows XP

Steve Ballmer announced today that Microsoft has sold 400 million Windows 7 licenses, but anywhere from half to two-thirds of PCs are still running Windows XP and need to get with the program.

He also continues to insist Windows 8 will ship in 2012, which really makes me wonder why those XP users need to switch now. December 2012 is 17 short months away, and XP support runs until 2014. I see little need to rush out now and buy Windows 7, use it for 18-24 months, and then turn around and buy Windows 8. If XP is fulfilling users’ needs, what’s the hurry? Unless Windows 8 is going to be late, as bad as Vista, or both. But none of that can happen, right? (Note: It’s not 2014 anymore, so if you haven’t upgraded from XP, you need to.)

I’m sure the Windows 8 Police will be along to haul me away shortly for insinuating such things. But until that happens, that 400 million figure lets us do some other interesting extrapolation. Read more

Dave Farquhar

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Upgrade diary: Compaq Presario C552US

Dave Farquhar Hardware July 9, 2011July 9, 2011apple, compaq, intel, spartan, toshiba, vista, Western Digital, windows 7, Windows Vista

The Presario C552US shipped from the factory with a 1.6 GHz Celeron M single-core CPU, 512MB of RAM, and Windows Vista Home Basic.

It’s the most miserable computing experience I’ve seen in a very long time, if ever. I don’t know how they ever sold a single one of these machines, performing like that.

Fortunately, there’s room to improve it.

Dave Farquhar

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Is it OK to defragment a laptop?

Dave Farquhar Hardware July 8, 2011September 26, 20171990s, christmas, defragmenter, vista, windows 2000, windows 98

Yet another question from a reader: Is it OK to defragment a laptop?

Of course it is. A laptop is a computer, after all. The only question is how often, and with what.

Dave Farquhar

dfarq.homeip.net

How to clean an MBR and recover drive partitions

Dave Farquhar security July 4, 2011July 17, 2017antivirus, apple, Apple Macintosh, Bit Defender, intel, macintosh, malware, Maxtor, MBR, Parted Magic, Standalone System Sweeper, unix, vista

Sometimes it’s necessary to recover drive partitions because you accidentally repartitioned a drive you didn’t mean to, or because your MBR got infected or otherwise trashed. Here’s how to recover them, for free.

Infecting MBRs with malware is popular with virus writers again. And I fully expect chaos to ensue, because that’s what happened the last time there was more than one virus floating around that infected MBRs. They quit doing it for a good reason.

So here’s how to clean up the mess when an MBR gets infected, or when multiple infections blitzes the MBR and the hard drive loses the ability to boot, just displaying a message like Missing Operating System or Operating System Not Found.

We’ll be using the Gparted Live CD. Many Linux live CDs have the proper tools, but GParted works well and it’s a small download. You can try to use another Linux live CD, and it will work fine, but the icons might not all be where I say they are.

Dave Farquhar

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I’ve seen the Windows 8 screenshots, and I smell panic

Dave Farquhar Windows June 2, 20111980s, apple, IBM, model m, motorola, vista, windows 7, windows 8, Windows Vista, Windows XP

I’ve seen the Windows 8 screenshots. What I see in them reeks of overreaction. Pundits are predicting a post-PC era, so Microsoft is trying their best to make a PC look and feel like a smartphone.

Why does a PC need to look and feel like a smartphone?
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Dave Farquhar

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Disadvantages of Windows 98 and 98SE

Dave Farquhar Windows May 21, 2011July 3, 20181990s, antivirus, firefox, spyware, vista, windows 2000, windows 7, windows 98, windows 9x, windows me, windows nt, Windows XP

Many years ago, I wrote about the disadvantages of Windows 3.1 because I started noticing people searching for that. Now, I see people asking the same question about Windows 98. I spent 9 months of my life ripping Windows 98 apart and putting it back together again and writing about it, so I know it well.

As much of an improvement as Windows 98 was over Windows 3.1 and even Windows 95, it, too, is feeling the effects of time. Windows 98SE was the best of the Windows 9x series (better than its successor, Windows ME), but there are better things to run today.

Dave Farquhar

dfarq.homeip.net

How Windows knows if your network requires you to visit a web page

Dave Farquhar Windows May 18, 2011vista, windows 7, Windows Vista

This is a nice writeup on how Windows Vista and Windows 7 know whether you have an active Internet connection and whether you need to visit a page in your web browser to activate it. It also talks about the privacy implications, and how to set up the service to use your server, rather than Microsoft’s.

Dave Farquhar

dfarq.homeip.net