RE: Oma is not working on 2 sites

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Hi Chico,

Thanks for posting here.

From your post, I understand that the OMA does not work either internally
or externally network. When you tried to authentication on the login
screen, you receive the error message with Event ID is "1503". If I am off
base, please feel free to let me know.

Based on my research, Event 1503 is quite general; so I think the issue may
be occur the following causes:

1. The issue may occur when Exchange-OMA virtual directory not work. You
can remove the old Exchange-OMA virtual directory and create a new one. For
more information regarding create new Exchange-OMA virtual directory,
please refer the following knowledge base article:

Exchange ActiveSync and Outlook Mobile Access errors occur when SSL or
forms-based authentication is required for Exchange Server 2003
http://support.microsoft.com/kb/817379/en-us

2. The issue may also happen when the Authentication Method for Exchange,
OMA, and Exchange-OMA virtual directory is incorrect. Please take a look at
the steps below:

For Exchange-OMA virtual directory:

1). Open IIS Manager
2). Open properties of virtual directory Exchange-OMA
3). Select Directory Security tab
4). Select Edit in Authentication and access control box. Make sure the
authentication setting as below:

Authentication Methods
Enabled Basic authentication
Enabled Integrated Windows authentication
Disabled anonymous access

For OMA virtual directory and Microsoft-Server-ActiveSync virtual directory:

1). Open IIS Manager
2). Open properties of OMA virtual directory and
Microsoft-Server-ActiveSync virtual directory respectively.
3). Select Directory Security tab
4). Select Edit in Authentication and access control box. Make sure the
authentication setting as below:

Authentication Methods
Uncheck Enable anonymous access
Uncheck Integrated Windows authentication
Check Basic authentication

If the issue persists, please collect the following information and send it
to my work address v-stezhu@xxxxxxxxxxxxx:

1. Collect IIS Log:

1). On Exchange Serves, open IIS MMC, right click Default Web Site and then
click Properties.
2). Click Website tab and then check Enable logging.
3). Stop the Default Website and RENAME the existing IIS log files under
C:\WINDOWS\system32\LogFiles\W3SVC1.
4). Restart the Default Website and reproduce the problem, which will
generate new IIS log file with the exact error.
5). Go to the following folder on Exchange Server:
C:\WINDOWS\system32\LogFiles\W3SVC1.
6). Send me the log files to my working email address
v-stezhu@xxxxxxxxxxxxxx And please let me know the alias of the user who
encountered the issue.

2. Collect IIS Metabase

1). On Exchange Server, install .NET Framework Version 1.1:
http://www.microsoft.com/downloads/details.aspx?FamilyID=262d25e3-f589-4842-
8157-034d1e7cf3a3&DisplayLang=en.
2). Install MBExplorer by installing IIS 6 Resource Kit Tools:
http://www.microsoft.com/downloads/details.aspx?FamilyId=56FC92EE-A71A-4C73-
B628-ADE629C89499&displaylang=en.
3). Once it is installed, access it from Start, Programs, IIS Resources,
Metabase Explorer.
4). In the left pane, right click ''LM'' (under your server computer name)
to choose ''Export to file'', and then save it as IIS.mbk.
5). Compress this mbk file and send it to me for analysis. Please let me
know the password if you set on this iis mbk file.

3. Please provide the application log file.
1.) Open Computer Management; click Event Viewer under System Tools.
2.) Right click Application Log and select Save Log file as¡­
3.) Select path and type the name.
4.) Click Save.

Please let me know the result above so that I can provide further
assistance on this problem. I am looking forward to your reply.

Have a nice day.

Best Regards,

Steven Zhu
MCSE
Microsoft Online Partner Support
Get Secure! - www.microsoft.com/security
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