Download Microsoft Exchange Server 2010 Rollup 5

Microsoft has released the fifth Rollup for Exchange Server 2010 RTM. This update resolves an issue that could occur when installing service pack 1 on a Rollup 4 environment. The corresponding list of changes looks like this:

Update Rollup 5 for Exchange Server 2010 RTM

This update contains an internally found issue which can impact upgrades from RTM RU4 to Service Pack 1. We have opted to release an out-of-band update rollup for Exchange 2010 RTM proactively to ensure customers have as smooth an upgrade experience as possible.

• 2266458 Setup cannot perform a mode:/uninstall on a HT role server since RU2 delivered MSFTE.msi

Currently, we have no plans to release future update rollups for Exchange Server 2010 RTM. We strongly recommend customers upgrade to Service Pack 1 with the latest Update Rollup after installing this update.