Hi

We have Exchange Server 2010 SP1 in our environment. we have around 600 mailboxes.

Outlook is setup in cached mode for the clients.

Our previous Offline Address Book got corrupted, so I created a new OAB in our mailbox server.

Today morning at the scheduled maintenance period of 5:00 AM the newly created OAB was updated.

However at the client end, for some users the new OAB is working fine and the address book is automatically updated.

For other clients the OAB did not get updated. When I perform a manual update for these clients SEND/RECEIVE, it gets updated.

Kindly let me know how to solve this? OAB should be automatically updated for all clients.

Read this

How frequently is the offline address book updated on the Outlook client?

A5: If left constantly running, Outlook in cached mode automatically updates the offline address book on the client every 24 hours. The 24-hour time period is measured from the time that the offline address book was last downloaded successfully. For example, if you complete an offline address book download at 09:00 today, Outlook will start the offline address book download the next day at approximately 09:00. Therefore, different people will receive updates at different, random times.

Note The default setting on the Exchange computer is to generate an offline address book differential file every morning at 04:00. For a change that is made in Active Directory to reach the client computer, the following events must occur:

• The change must be picked up by the Exchange computer that generates the offline address book files. This can take several hours. At worst, it can take 24 hours. This variable will be referred to as "x."
• The Outlook clients must download the offline address book updates every 24 hours. This update can take several hours. At worst, it can take 24 hours. This variable will be referred to as "y."

The update reaches the client machines x+y hours later. It would be rare for a client to ever experience a 48-hour delay or more unless there were some Active Directory or public folder replication issues.

• Proposed as answer by Vishwanath.S 37 minutes ago

Read this

How frequently is the offline address book updated on the Outlook client?

A5: If left constantly running, Outlook in cached mode automatically updates the offline address book on the client every 24 hours. The 24-hour time period is measured from the time that the offline address book was last downloaded successfully. For example, if you complete an offline address book download at 09:00 today, Outlook will start the offline address book download the next day at approximately 09:00. Therefore, different people will receive updates at different, random times.

Note The default setting on the Exchange computer is to generate an offline address book differential file every morning at 04:00. For a change that is made in Active Directory to reach the client computer, the following events must occur:

• The change must be picked up by the Exchange computer that generates the offline address book files. This can take several hours. At worst, it can take 24 hours. This variable will be referred to as "x."
• The Outlook clients must download the offline address book updates every 24 hours. This update can take several hours. At worst, it can take 24 hours. This variable will be referred to as "y."

The update reaches the client machines x+y hours later. It would be rare for a client to ever experience a 48-hour delay or more unless there were some Active Directory or public folder replication issues.

• Proposed as answer by Vishwanath.S Saturday, August 01, 2015 6:50 AM

Read this

How frequently is the offline address book updated on the Outlook client?

A5: If left constantly running, Outlook in cached mode automatically updates the offline address book on the client every 24 hours. The 24-hour time period is measured from the time that the offline address book was last downloaded successfully. For example, if you complete an offline address book download at 09:00 today, Outlook will start the offline address book download the next day at approximately 09:00. Therefore, different people will receive updates at different, random times.

Note The default setting on the Exchange computer is to generate an offline address book differential file every morning at 04:00. For a change that is made in Active Directory to reach the client computer, the following events must occur:

• The change must be picked up by the Exchange computer that generates the offline address book files. This can take several hours. At worst, it can take 24 hours. This variable will be referred to as "x."
• The Outlook clients must download the offline address book updates every 24 hours. This update can take several hours. At worst, it can take 24 hours. This variable will be referred to as "y."

The update reaches the client machines x+y hours later. It would be rare for a client to ever experience a 48-hour delay or more unless there were some Active Directory or public folder replication issues.

• Proposed as answer by Vishwanath.S Saturday, August 01, 2015 6:50 AM

+ Exchange 2010 SP1 isn't supported anymore so suggest you to upgrade it to SP3 & latest UR to ensure there isn't any known bug around the system...

Hi,

First of all, Exchange SP1 and SP2 are end of support, we strongly recommend the installation of the newest SP3 RU.

See: https://support.microsoft.com/en-us/lifecycle/search?sort=PN&alpha=Microsoft%20Exchange%20Server%202010&wa=wsignin1.0

Anyway, are the worked outlook client version different with the not worked outlook clients? If you want much longer time, will the not worked outlook clients update the OAB?

Best Regards.

Hi,

First of all, Exchange SP1 and SP2 are end of support, we strongly recommend the installation of the newest SP3 RU.

See: https://support.microsoft.com/en-us/lifecycle/search?sort=PN&alpha=Microsoft%20Exchange%20Server%202010&wa=wsignin1.0

Anyway, are the worked outlook client version different with the not worked outlook clients? If you want much longer time, will the not worked outlook clients update the OAB?

Best Regards.