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OCS 2007 gets Error from Exchange Web services when Client uses Outlook 2007
We have a fully functional OCS 2007 setup in production. It works great.
Users are currently using Outlook XP.
We have just setup a separate Exchange 2007 cluster with separate CAS server.
There is no problem when a users mailbox is moved over to the new exchange server.
OCS show no errors and the logs are empty.
The problem starts when a user then upgrades or uninstalls Oultook XP and then install Outlook 2007.
Immediately there is the warning sign about "Exchange Connection Error":
"Communicator could not retrieve calendar or Out Of Office information from Exchange Web Services." etc etc
Now i have searched the web and seen some others struggling with this. However Google has chosen not to be my best friend...
Please understand that If I then sign in on OCS from a different PC that has Oulook XP, all is fine.
I am not dialing in from outside the company nor am I using Outlook Anywhere.
Could someone please tell me if there is something I must set for AutoDiscovery (and please tell me how - I am a noob with Exchange 2007) or if the EWS needs to be configured.
If you would like me to provide more info please let me know, but since we are planning on rolling out Outlook 2007 and migrating users over the the new exchange, this has to be resolved ASAP...
Regards
Adrian
Users are currently using Outlook XP.
We have just setup a separate Exchange 2007 cluster with separate CAS server.
There is no problem when a users mailbox is moved over to the new exchange server.
OCS show no errors and the logs are empty.
The problem starts when a user then upgrades or uninstalls Oultook XP and then install Outlook 2007.
Immediately there is the warning sign about "Exchange Connection Error":
"Communicator could not retrieve calendar or Out Of Office information from Exchange Web Services." etc etc
Now i have searched the web and seen some others struggling with this. However Google has chosen not to be my best friend...
Please understand that If I then sign in on OCS from a different PC that has Oulook XP, all is fine.
I am not dialing in from outside the company nor am I using Outlook Anywhere.
Could someone please tell me if there is something I must set for AutoDiscovery (and please tell me how - I am a noob with Exchange 2007) or if the EWS needs to be configured.
If you would like me to provide more info please let me know, but since we are planning on rolling out Outlook 2007 and migrating users over the the new exchange, this has to be resolved ASAP...
Regards
Adrian
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ASKER
Thanks for your prompt replies and suggestions.
We are using Exchange SP1
I will get a self-signed certificate and let you know how it goes :)
We are using Exchange SP1
I will get a self-signed certificate and let you know how it goes :)
ASKER
sorry - I will get a Microsoft Certificate and NOT a self-signed certificate... need coffee...
Your best option is to purchase a certificate. That way you will have no trust issues, plus it will be valid for everything else, like OWA, Exchange ActiveSync and Outlook Anywhere.
GoDaddy are the cheapest source at the moment for the UC/SAN certificate. https://DomainsforExchange.net/
This blog posting explains what you need to do: http://www.sembee.co.uk/archive/2008/05/30/78.aspx
-M
GoDaddy are the cheapest source at the moment for the UC/SAN certificate. https://DomainsforExchange.net/
This blog posting explains what you need to do: http://www.sembee.co.uk/archive/2008/05/30/78.aspx
-M
ASKER
To speed things up internally we used a self signed certificate (not best practice) but it has solved all issues.
Thanks for your help guys - it is much appreciated.
Thanks for your help guys - it is much appreciated.
-M