Darrell Norton's Blog [MVP]

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Got IIS Problems? Check the URLScan logs

We all run IISLockdown on our computers, because we are security-conscious developers, right?

If you have and you are having any sort of IIS problems, make sure to check the URLScan logs. You can find them at %WINDOWS%\system32\inetsrv\urlscan. If any requests are being rejected due to URLScan filters, the log file will show the reason why a request was rejected.

I spent half-an-hour trying to figure out why the computer couldn’t find my BizTalkServerRepository. Aaargh!

Published Mar 24 2004, 01:23 PM by darrell

Comments

Brian Broom said:

I ran into the same problem installing flexwiki. URLScan was rejecting requests because of dots in the filename. Didn't figure that out untill I tried to figure out why certain requests made it to the iis logs and some did not.

# March 24, 2004 2:32 PM

Darrell said:

Brian - yes, I ran into the exact same thing on an internal web project that had dots in the URL. Man was that frustrating.

# March 24, 2004 2:34 PM

Darrell Norton's Blog said:

URLScan Watcher - find out when the URLScan log file changes

# March 26, 2004 1:52 AM

Seth said:

Online spot to check your urlscan logs.

http://www.web-tool.org/urlscan

-Seth

# May 11, 2004 6:03 AM

Darrell said:

Seth - that tool tells you if something is wrong, which is easy enough to tell by checking the log.

Better yet, I wrote a tool that shows a popup window whenever the URLScan log is modified by URLScan (indicating a rejected request). Check it out here:
http://www.gotdotnet.com/Community/Workspaces/workspace.aspx?id=1c2cda67-58a8-4b49-94a3-5063d90c2506

# May 11, 2004 6:18 AM

Thomas Williams said:

URLScan, FlexWiki and Reporting Services

# July 7, 2004 8:13 PM

George said:

I am trying to install a software on Windows 2003 IIS 6.0 that runs on ASPpages qualified on IIS 5.0 and the installation fails giving me an error requesting that I re-install IIS. I get this error even though IIS 6.0 is installed and running.

# December 2, 2004 3:05 AM

Bharathi said:

Hi,

I am trying to install Application SErver (IIS) on Windows 2003 server. Add/Rmove Windows Componenets, I had the Windows 2003 Enterprise edition Disc, it does not recognise the file and gives me the roor "Setup cannot copy the file convlog.ex_" The file is right there, but it has problems reading the file. Please help me.

Thanks
Bharathi

# January 12, 2005 7:57 AM

Adam Ramsden said:

I am currently using iis 5.0 to host a created website on my internal ip. All my settings for default website are correct, but suddenly i cannot view the site in firefox or i.e. The error msg i recieve is page error, page cannot be displayed, or in firefox to contact my system admin as the page could not be executed?

I have no idea! Help!

# February 28, 2005 7:35 AM