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Exchfilt.dll Not Being Loaded Isapi Filters

Posted on 2004-09-10
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Last Modified: 2008-01-09
Hi all,

Currently experiencing a problem since exporting IIS to a new Pc. Upon entering the properties for the required website, then Isapi filters, Exchange Web Component (exchfilt.dll) has a red arrow pointing down, obviously reporting an error. I have checked file location etc, but to no avail. The new Pc running IIS is a new install of the Os (Windows 2000) so file versions etc should be correct. Obviously as a result of this, webmail is no longer functioning. Any help here would be greatly appreciated.

Many Thanks,

Paul
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Question by:exedos
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BNettles73 earned 400 total points
ID: 12026218
Try this ...

Start the Microsoft Management Console (MMC) Internet Service snap-in.
Expand the Default Web Site.
Right-click the Default Web site, and then click Properties.
Click the ISAPI Filters tab.
In the Filter Name field, highlight Exchfilt, and then click Remove.
Click Ok to save changes

Right-click the Default Web site, and then click Properties.
Click the ISAPI Filters tab, and then click Add.
In the Filter Name field, type Exchfilt.
In the Executable field, type c:\Winnt\System32\Exchfilt.dll (assuming that Windows NT is installed on drive C), and then click Finish. NOTE: The status of the Exchfilt filter always shows a red arrow pointing down to indicate it is not loaded. This is not true, and the filter will work anyway.
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Author Comment

by:exedos
ID: 12027356
Hi, thanks for your reply. Have tried this, problem still seems to exist. On previous IIS server, the arrow was green. Still no webmail.

Thanks,

Paul
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LVL 12

Expert Comment

by:BNettles73
ID: 12027428
Have you tried reinstalling Exchange over top of the existing? (make sure you have a good backup before and after of exchange and the IIS metabase) ... btw ... I am definitely not saying to uninstall ... sometimes simply reinstalling exchange over top can resolve quirky issues ... keep in mind you'll need to reapply service packs afterwards ...

Before doing anything ... you may want to check your permissions -

Make sure that all exchange virtual directories have basic and integrated authentication enabled - and additionally, /exchweb has anonymous enabled ...

btw ... are you running exchange 5.5 or 2000?
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Author Comment

by:exedos
ID: 12027635
Hi, thanks again for the reply. Havent tried an Exchange re-install as its in place and running ok at the moment, we are just trying to momve IIS to a standalone server. Its Exchange 2000.


Thanks,

Paul
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Author Comment

by:exedos
ID: 12045565
If its any further help, an event with the ID of 14 in the system log, stating 'The http filter DLL f:\bin\exchfilt.dll failed to load. The data is the error.


Any further help much appreciated,

Paul
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