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One of which I even participated in, gave bad advice [webmasterworld.com] and am now cursed with the identical problem as the person requesting help.
MS offers advise on disabling WebClient service, however I was unable to do so.
Now for the monster I created!
Not sure if I'll be able to duplicate the process, nor even sure that I desire to do so.
1) I still have a handful of pages in which I use MS FrontPage (NO Publish) to edit. The pages are basically indexes with structured tables.
2) I had my html editor open, FrontPage open and my FTP software open, all simultaneously.
3) In the open FP page, I was inserting a thumbnail image and using a link to my second website, when in fact, the image had not been uploaded.
a) the image would not insert properly
b)thus I inserted via local folder and edited the image
link manually, which eventually resulted in a proper
404 in my visitor logs because the image had not been
uploaded.
4) after uploading the new page, updated pages and images,
everything works fine.
MY OWN IP- - [23/Feb/2009:04:25:48 -0600] "PROPFIND /MyFolder/ HTTP/1.1" 404 - "-" "Microsoft-WebDAV-MiniRedir/5.1.2600"
MY OWN IP- - [23/Feb/2009:04:25:48 -0600] "OPTIONS / HTTP/1.1" 200 - "-" "Microsoft-WebDAV-MiniRedir/5.1.2600"
I've denied many a IP range for these types of requests within my visitor logs. PERHAPS wrongfully?
The question what creates the scenario?
Just MS FrontPage? NO!
Office? Not sure
The MS WebClient?
Is it possible for a visitor to duplicate this scenarion WITHOUT attempting to create a link (as I was)?
I have this in my .htaccess file:
RewriteCond %{HTTP_USER_AGENT} ^microsoft-WebDAV-MiniRedir [NC,OR]
Users appear unaffected.
As to what causes it, I would guess at some option in Microsoft products that the user probably doesn't even know that they have enabled - I see a variety of requests from FrontPage, Office etc that I habitually 403 without any noticeable harm, and unless you offer WebDAV accounts on your site this one is no exception.
WebDAV is an optional Apache module that essentially enables account-based "drop boxes".
...
[edited by: Samizdata at 1:27 am (utc) on Feb. 24, 2009]