Hi All,

Few Days Back we just migrate from Google Apps to Office365.Every things seems to be working fine except Offline Address Book.Offiline Address Book is not able to download just going in send and receive process and produce timeout error.

We just raised Service Request to Microsoft and below is their findings which they send on email.

Issue Definition:

Your users are not able to download Offline Address Book from Outlook. OWA is not affected. The Autodiscover Test from Microsoft Remote Connectivity Analyzer is successful. With a domain user logged on a domain joined machine, the issue can be reproduced from local network and from outside. With a machine not joined to the domain, the OAB can be downloaded without any problems. The issue is present for all users. For troubleshooting reasons we chose user: osama.mansoor@crescent.com.pk

Steps performed so far:

We ran again the Autodiscover test from Microsoft Remote Connectivity Analyzer and was successful.

We made the AutoConfiguration test from Outlook 2013. Test was successful and provided the same URL for OAB: https://outlook.office365.com/OAB/df3bf201-d31f-4a69-e51dcf5daa09/

We tested in the IE the OAB link: https://outlook.office365.com/OAB/df3bf201-d31f-4a69-e51dcf5daa09/OAB.xml. We were able to access the XML after entering the affected users credentials.

In Outlook Web App the issue is not present.

We started the ETL logging for Outlook 2013 and ran the Fiddler Trace Application to capture the HTTPS traffic decoded.

With Fiddler Trace running the issue was solved. Fiddler Trace application installed a certificate for decoding the HTTPS traffic. After removing the Fiddler Trace certificate the issue came back.

Steps to be performed:

Please send me by email the files collected in our LMI session.

We conclude that issue is not Office 365 related. Please check the following in your internal network:

1. verify the certificate installed for users from local AD.
2. if you have proxy, check if the OAB request is allowed to pass.
3. check that the Background Intelligence Transfer Service (BITS) service is running on the affected machine: http://blogs.technet.com/b/ehlro/archive/2014/03/21/oab-download-and-bits-service.aspx
4. please be sure BITS service is not blocked at proxy / firewall level.
5. please check local AD policies that can be related with BITS and certificates.

MY Question :

Can someone help me how can I check is localAD certificate having this problem or not ?

• Moved by Jason Johnston [MSFT]Microsoft employee 18 hours 49 minutes ago Not a development question.

This forum is for Exchange Development questions. Your question seems better suited for the Office 365 forum on TechNet. I'll move it for you.