Outlook continuously prompt for credentials

[richard]

We are using MS Exchnage server 2003, some of our user using outlook 2000 complain that while loging into their mailbox outlook repeatedly ask for user name & password.

They receive following error message

Your logon information was incorrect. Check your username and domain, then type your password again....
or
The logon credentials supplied were incorrect. Make sure your username and domain are correct, then type your password again.

Please help

[sunil]

This is because the system registry may be missing one or more values in the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Rpc\ClientProtocols

The following values are the core required values for Windows XP or Windows 2000:

The best way to overcome this is to import a valid registry key from a computer that is working correctly. To do this: 1. Start Registry Editor (Regedt32.exe).

2. Locate and then click the following key in the registry:
KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Rpc\ClientProtocols
3. Click the ClientProtocols key.
4. On the File menu, click Export.
5. Save the file with a .reg or a .txt extension in the event you need to send the file by using Outlook. You must save and rename the attachment to a .reg extension to import the key.
6. Quit Registry Editor.
7. Rename the file that you just exported from a .txt file extension to a .reg extension, and then copy it to a folder on your computer.
8. Start Registry Editor (Regedt32.exe).
9. Locate and then click the following key in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Rpc\ClientProtocols
10. Select the ClientProtocols folder, click File, and then click Import.
11. Select the .reg file that you saved, and then click Open.
12. Quit Registry Editor.
13. Quit and then restart Outlook 2002.

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[zlatan24]

[zlatan24]

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