Kerio Personal Firewall Driver: AppendFragmentToLongPath

I hope someone has seen this before. I get this error popup from Kerio's taskbar icon. For me, it happens when I am trying to run an ASP.NET application I am trying to develop using Visual Studio .NET and IIS. When it first requests a page (.aspx). It seems to be a general error instead of just relating to the tool I am using. Any help on this would be appreciated since it pops up every time driving me crazy.

Windows - Fatal Application Exit Kerio Personal Firewall Driver: AppendFragmentToLongPath: OpenDirectoryObject error: C00000BE, Directory: \\??\\UNC\\?\\C:\\

ps. it doesn't seem to hurt anything... all applications still run normally.

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Well go behind the protection of a cheap NAT router and disable Kerio when doing your .NET devlopment work and you won't have a problem when doing the .Net compile. And besides, if you have IIS running on that machine, then the machine needs to be behind the protection of a NAT router and not some PFW solution on a mahcine with a direct connection to the Internet -- that's no appliance between the modem and the computer.

formatting link
Duane :)

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Duane Arnold

I also have the same problem every time I compile an asp.NET application it pops up the a small icon in sys tray saying exactly the same message.

I have XP SP2 without automatic updates (I had engouh!...) without Firewall. I use BitDefender and of course a Kerio firewall.

I also would appreciate same help on this one.

Best regards,


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YES! The message disappears.

No it was not the NAT solution but it helped me find the real problem.

In Kerio Firewall I had a rule saying that some program, (don't remember which), could not contact the svchost process.

I delete the rule and voilá! It worked!... no more problems and IE now makes the load of the pages much more faster...

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No it didn't work :-( It still there... everytime i compile the source of .net the message cames saying that the AppendFragmentToLongPath. In the list of processes that i have running in my computer i saw aspnet_wp.exe with a strange path ... \\\\?\\C:\\WINDOWS2\\Microsoft.NET\\Framework\\v1.1.4322\\aspnet_wp.exe Maybe is the \\\\?\\ that is making the error.

In the system log the message cames like this: The description for Event ID ( 4000 ) in Source ( fwdrv ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: \\Device\\FWDRV; AppendFragmentToLongPath: OpenDirectoryObject erro. Can anybody help ?

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