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sovereignpaki

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Prompting of Exchange Password frequently in outlook 2007

Hi,
Few users in my company getting password prompt for exchange almost 1 or 2 times a day. After keying the password the prompt goes off but came back again after a while.
We are on pure (outlook & exchange) 2007 environment.
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Bryon H
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you should check for and run all the exchange 2007 service packs and hotfixes.

these are not offered by microsoft update, you gotta get them yourself

exchange 2007 sp2:
http://www.microsoft.com/downloads/details.aspx?FamilyID=4c4bd2a3-5e50-42b0-8bbb-2cc9afe3216a&displaylang=en
read the release notes, there's a side-program "installation tool" you have to run if its server 2008

after that's installed, get this:
update rollup 2 for exchange 2007 sp2
http://www.microsoft.com/downloads/details.aspx?familyid=FA83BE11-9D5E-47BC-9A51-A10986F22928&displaylang=en

what you're seeing was actually fixed in sp1 rollup 9, but it's best to get these as they fix a lot of other stuff

afterwards, if 2008, you'll need to disable https on IIS, then re-enable it - details in the release notes

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Springbokkie

how are the clients connected to the exchange server?
directy ot RPC over HTTP?
There are a few reasons why this might happen.
If you don't have Rollup 9 for Exchange installed then download Service Pack 2 and install that.

There was also a recent security update that caused a kernel authentication issue.

Try option 1 and 3 in my article here: https://www.experts-exchange.com/articles/Software/Server_Software/Email_Servers/Exchange/Outlook-continually-prompting-for-username-and-password.html

if you find my article useful please vote for it :)
Avatar of sovereignpaki

ASKER

My all exchange server are on SP2 with Rollup 1 Installed. I can proceed for Rollup 2 but just looking for alternative solution as it's happening for apprx 4 users out of 970 users.
fyi, The console version is 8.2.217.2 and using shell command version 8.2 (build 176.2)

The client are connected RPC over HTTP.
Hi Glen,
Indeed it was great article (specially to the point) and looks sensible, and I press Yes button.

I've 2x Hus/CAS (load balanced) server and in both the option "Enable kernel-mode authentication" is not checked, which I'll do after completing internal process. Fyi in both hub/cas IIS has following setting.

Autodiscover
Basic Authentication:Enabled
Windows Authentication:Enabled
The rest are disabled.
EWS
Basic Authentication:Enabled
Windows Authentication:Enabled
The rest are disabled.
RPC
Basic Authentication:Enabled
Windows Authentication:Disabled - is this setting correct.
The rest are disabled.
OAB
Anonymous Authentication:Enabled
Basic Authentication:Enabled
Windows Authentication:Enabled
The rest are disabled.

Hi, I've enabled the kernel-mode authentication but still user getting password prompt.
under RPC virtual directoy the windows authentication is set to disabled, is this correct setting or should i enable it and set kernel-mode authentication for rpc VD as well.
I've asked field support to change to Basic Authentication if it is set to NTLM, could it cause this issue.
ASKER CERTIFIED SOLUTION
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sovereignpaki

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