Hi Dana, I understand this is older topic, but didn't found any reply on it. We have similar issue, but in our case it's OAB. I found out that TMG client is altering IE proxy settings on some Windows clients pushed via GPO and by this is removing also Exchange entries. Oultook is then not able to download OAB from Exchange.
Br, Andrej From: [email protected] [mailto:[email protected]] On Behalf Of xyz Sent: Wednesday, November 20, 2013 3:20 AM To: [email protected] Subject: [Exchange] OUTLOOK 2013 shared calendar sync issues Greetings, Exchange 2010 SP2 RU3 backend OUTLOOK 2013 CLIENT After a rollout of OFFICE 2013 and OUTLOOK 2013, we have had numerous reports of shared calendars not syncing in a timely manner to the desktop OUTLOOK 2013 client. Most clients are in cached mode, but we have several that are DEEP FREEZE frozen and need to run in ONLINE mode. Send/Receive Updates Folders helps a bit, but not much for very large departmental shared calendars and we can't expect our users to do this all the time. In case you have run into this with the OUTLOOK 2013 client, One of our techs found: http://support.microsoft.com/kb/2817347/en-us Some quick tests today shows this " may have improved things a bit on large departmental shared calendar", but far from conclusive. Just wondering if any or you with OUTLOOK 2013 rollout have run into this, and providing a "possible" link to test if this resolves. YMMV, so please do internal isolated testing. Hoping for any responses. Please let me know with any questions. Thank you Dana
