Update Rollup 12 for Exchange Server 2010 Service Pack 3

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Notice

This update is no longer available. To fix the issues that are described in this article, install the latest Microsoft Exchange Server update from the following Microsoft Docs article:

Exchange Server build numbers and release dates

Microsoft provides download files only for N-2 versions for an Exchange Server cumulative update (CU), where "N" is the latest CU. The latest CU can be used to recover servers that are running Exchange Server. This includes servers that have a previous CU installed.

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Summary

Update Rollup 12 for Microsoft Exchange Server 2010 Service Pack 3 (SP3) was released on December 15, 2015. This update rollup fixes various issues. Before you install this update, you must remove all interim updates for Exchange Server 2010 SP3. Also, see this important information about how to install this update.

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Issues that the update rollup fixes

This update fixes the issues that are described in the following Microsoft Knowledge Base article:

This update also includes new daylight saving time (DST) updates for Exchange Server 2010 SP3. For more information about DST, go to Daylight Saving Time Help and Support Center.

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More Information

Installing this update on a DBCS version of Windows Server 2012

You can't install or uninstall Update Rollup 12 for Exchange Server 2010 SP3 on a double-byte character set (DBCS) version of Windows Server 2012 if the language preference for non-Unicode programs is set to the default language. To work around this issue, you must first change this setting. To do this, follow these steps:

In Control Panel, click Clock, Region and Language, click Region, and then click Administrative.
In the Language for non-Unicode programs area, click Change system locale.
On the Current system locale list, select English (United States), and then click OK.

After you successfully install or uninstall Update Rollup 12, revert this language setting as appropriate.

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