OWA TAB Empty on Client Access Page (Full Version)

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RobbieGiroux -> OWA TAB Empty on Client Access Page (14.Jul.2011 10:34:39 AM)

Hi All
I have had an Exchange 2007 (sp1) running on server 2008 for a couple of years now - yesterday I ran into trouble with an update that caused all my app pools to freeze / freak out. I rolled back the install and restarted everything and everything came back online except OWA gave a 404 page missing error instead of the log off page when clients attempted to log off. I attempted to uninstall / reinstall the OWA virtual directory using the cmdlets and removing it in the IIS GUI

It seemed to unistall fine - but it will not let me reinstall - any version of the new-owavirtualdirectory command gives me an "An error occurred while creating the IIS virtual directory etc." error

When I look at the Server Config / Client Access / Outlook Web Access - the entry for OWA is blank - the OAB, Active Sync, and POP3 tabs are all fine.

All other mail clients are functioning smoothly

Is there anything I can try short of uninstalling IIS / the CAS role?




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 10:42:17 AM)

Hard to say what's going wrong without a more informative error message. Can you access the server's default web site in your browser?

Is anything listed if you do Get-OWAVirtualDirectory ? I assume that there will not be, but you never know...




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 10:48:35 AM)

Hi Lee
The error I get when trying to access the default web site is

HTTP Error 500.0 - Internal Server Error

Calling LoadLibraryEx on ISAPI filter "C:\Program Files\Microsoft\Exchange Server\ClientAccess\owa\auth\owaauth.dll" failed

When I run get-owavirtualdirecdtory I get the Legacy owa directorys - Exchange - Public - Exchweb - Exadmin




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 10:59:02 AM)

Yikes. I think you'll need to fix the default web site before trying to add the owa vdir. Is there anything in the Event Log to give a little more detail about that LoadLibraryEx failure? Does the named owaauth.dll file actually exist on the server? If so, have a look at the NTFS permissions. I only have E2010 available today, but they're rather similar in most respects. The permissions I have here are:

Administrators:Full Control
Authenticated Users:Read & Execute, Read
SYSTEM:Full Control

Are yours similar?




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 11:04:47 AM)

The file exists at that location - which folder are you asking for the file permissions on?

If I change the permissions on the OWA folder to what you have I can see the IIS 7 page when I open it in HTTPS - 404.3 as expected in HTTP




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 11:20:33 AM)

I'm asking about the NTFS permissions on the owaauth.dll file (not the folder it's in). Find it in Explorer, right-click to view the properties, and look at the Security tab.




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 11:24:48 AM)

There is no entry for Authenticated users on the file

The other enties are the same as yours


Thanks
Robbie G




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 11:29:27 AM)

I would try adding it - it can easily be removed, if nothing is improved. My guess is that IIS (which has to pretend to be an Authorised User, just like anyone else) will not be able to load it without these permissions being present.




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 11:36:16 AM)

Once I add it browsing the default web site shows me the IIS logo in HTTP

I still get the SSL error in HTTPS




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 11:44:53 AM)

Okay, well that's probably a step in the right direction. Can you expand a bit more on the HTTPS error that you encounter? I've not heard of that one before. You can access the IIS logo in the default web site okay if you use HTTP, but if you try HTTPS you get a 404.3 error? Is that definitely the number you see?




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 11:51:27 AM)

Hi Lee
I am not getting the error any longer on HTTPS - now it is going to the IIS logo too




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 12:00:02 PM)

What happens if you try the New-OWAVirtualDirectory now?




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 12:05:44 PM)

Hi Lee
I get the error
New-OwaVirtualDirectory : An error occured while creating the IIS virtual directory 'IIS://SERVER.cotting.org/W3SVC/1/ROOT/owa' on 'SERVER'
AT line:1 char:24 + new-owavirtualdirectory <<<< "owa"




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 12:14:50 PM)

What are you typing in?




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 12:17:50 PM)

I have tried
New-owavirtualdirectory

New-owavirtualdirectory "owa"

New-owavirtualdirectory "fred"

New-OWAVirtualDirectory -OwaVersion:Exchange2007 -Name "owa"

New-OWAVirtualDirectory -OwaVersion:Exchange2007 -Name "owa" -WebSite "Default Web Site"

New-OWAVirtualDirectory -OwaVersion:Exchange2007 -Name "owa" -WebSite "Default Web Site" -DomainController MYDC

New-OWAVirtualDirectory -OwaVersion:Exchange2007 -Name "owa" -WebSite "Default Web Site" -DomainController MY Other DC




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 1:33:38 PM)

I think that if you specify no parameters, the defaults will (or should) create what you are looking for. Note that it should be "WebSiteName" not "WebSite", so anything with that in will probably fail. What error do you get if you just type

New-OWAVirtualDirectory

with no parameters? Have you tried typing it on its own since you did the permissions change?




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 1:38:39 PM)

Hi Lee
I get the same error with each version of the command - the only difference is that with no parameters it fails at char 23 instead of 24

Reran them after changing permissions and with the syntax change you suggested




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 2:33:13 PM)

Do you see anything in the Event Log?




RobbieGiroux -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 2:54:51 PM)

Hi Lee
I bit the bullet and reinstalled the CAS (much easier than I anticipated)

During the reinstall I found that my IIS config file had retained the OWA settings that I had deleted this caused the reinstall to fail - basically I needed to delete the incorrect lines in the ApplicationHost file.

Once I did that the CAS installed in a jiffy and all I had to do was restart my app pools.

Thank you very much for your help with this!




leederbyshire -> RE: OWA TAB Empty on Client Access Page (14.Jul.2011 5:13:24 PM)

Glad you got it fixed! The reinstall is usually pretty straight-forward these days, but I tend to avoid suggesting it, just in case things get worse.




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