Exchange Server Calendar not syncining with WM6.0

Posted on 2008-06-10
Last Modified: 2013-12-05
I have a Blackjack I with WM6.0.  Using the latest version of Active Sync I am able to sync email, contacts, tasks both up and down.  However, Calendar events only sync up to the server and not down to the phone.  During the sync, the counter showing the number of new calendar entries to be synced is correctly shown on my phone and it even counts off like it is working.  No events though make it to the phone.

We are running MS Exchange 2003
Question by:GPSATHOME
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
LVL 16

Expert Comment

ID: 21755139
It could have something to do with security settings, or the anti virus program on the exchange server.

Author Comment

ID: 21755191
I would need more help as my IT admin has looked for a solution and so far has no suggestions.
LVL 16

Expert Comment

ID: 21755203
Are there any errors in the Exchange server log, or on your log?  Have you verified all settings are correct on your mobile device?
Are You Using the Best Web Development Editor?

The worlds of web hosting and web development are constantly evolving. Every year we see design trends change, coding standards adapt and new frameworks/CMS created. With such a quick pace of change it’s easy to get lost trying to keep up.

See if your editor made the list.


Author Comment

ID: 21755220
No error messages on the server.

I have reset my phone many times using many combinations.  There really are not that many options on the phone side.  I agree with you that it is probabaly on the server or firewall side.
LVL 16

Expert Comment

ID: 21755348
could have something to do with the SSL certificate and the way the NAT is setup.

f you have static IP addresses and Exchange ActiveSync isn't working correctly, then the problem most likely is related to your SSL certificates. Typically, when you enable Exchange ActiveSync, wireless clients synchronize using SSL encryption. SSL encryption requires the use of an SSL certificate, which contains the server's fully qualified domain name (FQDN) and IP address. This can be problematic.

When clients attempt to synchronize, they connect to the NAT firewall, not directly to the Exchange Client Access server (CAS). The NAT firewall forwards the request to the server, which responds. The server attempts to establish SSL encryption using its certificate. However, the server's output is proxied back through the NAT firewall, which has a different IP address than the server.

Because the organization has one public IP address, that address is used for all outbound communications. The client thinks that the response is coming from the NAT firewall's IP address, rather than the Exchange server's IP address. The SSL certificate contains the server's IP address; therefore, the client thinks the certificate is invalid.

One solution for this involves creating a host entry on the mobile device that maps to the FQDN to which the SSL certificate is assigned. Windows Mobile devices don't support the use of host files, but you can add the necessary host record to the device's registry. Host information can be entered into the mobile device's registry at: HKEY_LOCAL_MACHINE\comm\tcpip\host.

Author Comment

ID: 21760027
Your firewall apporach may have some merit.  However, the Active Sync on the phone is not using an SSL connection.  Does this fact make any difference?
LVL 16

Accepted Solution

LegendZM earned 250 total points
ID: 21761962
It might, I've only ran Active Sync over SSL, I've never used it in a non-secure setting.

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When asking a question in a forum or creating documentation, screenshots are vital tools that can convey a lot more information and save you and your reader a lot of time
If you troubleshoot Outlook for clients, you may want to know a bit more about the OST file before doing your next job. IMAP can cause a lot of drama if removed in the accounts without backing up.
This Micro Tutorial hows how you can integrate  Mac OSX to a Windows Active Directory Domain. Apple has made it easy to allow users to bind their macs to a windows domain with relative ease. The following video show how to bind OSX Mavericks to …
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…
Suggested Courses

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question