After enjoying Google Desktop's ability to search my local machine so quickly and effectively, it started failing recently with "page cannot be displayed" errors (you know, the kind that usually happen when a web page can't be found). What's curious is that it's only in IE (6). If I view the same failing local URL in Firefox, it works fine. So it's not GD itself, but something about it and IE. Has this happened to you? Various remedies have been suggested. I wanted to share thoughts in case this may help others (or they can help me).

First, the error I get is the traditional "page cannot be displayed" error, or if one has "show friendly HTTP error messages" turned on in IE's internet options>advanced, it would say. (Other words the non-friendly version of the error shows are "cannot find server", in text at the bottom of the page and in the title bar. I offer that here in case others search the web for those terms, so they find this.)
As for solutions, some remedies out there insinuate that something else is conflicting with GD, such as anti-spam or anti-virus packages. I have neither running (I run them on demand and never have any spambots or viruses...perhaps worthy of discussion in another tip). Another suggested an interaction with a download manager. The only one I had was Adobe's, and I did install it just recently so I removed it and restarted, but still had the problem.
As for conflicts, I can confirm that GD is running at the port that the URL uses (in my case 4664). I can see nothing's conflicting with it, since using the wonderful activeports freeware (aka aports, another topic worth me writing about) I can see that it is indeed listening on that port.
Indeed, again, the very fact that the URL works if loaded into Firefox tells me that this is not so much about whether GD is running but just its interaction with IE. It makes me wonder about some of the assertions out there that I see. Again, I offer that here for others who may be desperate to get it working. (Let's not fight about why I or others use IE. Also, while I realize there are extensions in FF to open a URL in IE, does anyone know of the reverse?)
One other thing I noticed was a technote/article (http://windowsxp.mvps.org/winsock.htm) about Winsock corruption that mentioned at the very end that identified GD specifically as an "LSP" or Layered Service Provider, as discussed at http://www.microsoft.com/technet/prodtechnol/winxppro/maintain/sp2netwk.mspx. Again, I offer all this for those who want to go digging further.
For now, I'm not sure I want to run the "netsh winsock reset catalog" command or "Winsock XP Fix" program that the two articles mention. But others in this dilemma may want to go ahead. I could also just try reinstalling GD, or uninstall/reinstall my network config (the tools above do that and more). Just wanted to share all that I've found so far in case others hit this. I'll certainly share if I resolve it.
I think you're digging too deep. Everything's local so the winsock/lsp
issue shouldn't be relevant. In fact, I think that article at msft.com is
outdated, as GD doesn't hook into the lsp like it used to (for about a year
now).
Have you tried this yet?
http://desktop.google.com/support/bin/answer.py?answer=12229
Wow, I guess you've got a google alert watching out for people mentioning
GD. Good for you, and thanks for the support.
Desktop dogg? Can you please respond to me?
These comments have been invaluable to me as is this whole site. I thank
you for your comment.
Hi, found this on http://groups.google.com/group/Google-Desktop_How-do-I/br
owse_thread/thread/dd5849c7c4d466c5
Robert, thanks, but I'm not sure about the diagnosis or the prescription.
Let me offer some new info for you, readers, and especially any Google
folks who may see this.