Estimo estas realizando un Upgrade de tu Exchange 2010 actual, en primera instancia corrobora desde la consola EMC a que servidor esta apuntando la OAB y si no tienes una OAB vuelve a generarla apuntando a tu servidor.
Te recomiendo que vayas directamente por Exchange 2010 SP2 Update Rollup 7, si no tienes un servidor de BES, ve directamente por el SP3
Exchange Server Release dates
Product name Build number Date
Microsoft Exchange Server 2003 6.5.6944233 03
Microsoft Exchange Server 2003 SP1 6.5.7226 5/25/2004
Microsoft Exchange Server 2003 SP2 6.5.7638 10/19/2005
Microsoft Exchange Server 2007 8.0.685.24 12/9/2006
Microsoft Exchange Server 2007 8.0.685.25 12/9/2006
Microsoft Exchange Server 2007 SP1 8.1.240.6 11/29/2007
Microsoft Exchange Server 2007 SP2 8.2.176.2 8/24/2009
Microsoft Exchange Server 2007 SP3 8.3.083.6 6/20/2010
Microsoft Exchange Server 2010 14.0.639.21 11/9/2009
Microsoft Exchange Server 2010 SP1 14.1.218.15 8/24/2010
Microsoft Exchange Server 2010 SP2 14.2.247.5 12/4/2011
Microsoft Exchange Server 2010 SP3 14.3.123.4 2/12/2013
Microsoft Exchange Server 2013 15.0.516.32 10/11/2012
Exchange Server 2007 Service Pack 1
Product name Build number Date KB
Microsoft Exchange Server Exchange 2007 SP1 8.1.240.6 11/29/2007
Update Rollup 1 for Exchange Server 2007 Service Pack 1 8.1.263.1 2/28/2008 KB945684
Update Rollup 2 for Exchange Server 2007 Service Pack 1 8.1.278.2 5/8/2008 KB948016
Update Rollup 3 for Exchange Server 2007 Service Pack 1 8.1.291.2 7/8/2008 KB949870
Update Rollup 4 for Exchange Server 2007 Service Pack 1 8.1.311.3 10/7/2008 KB952580
Update Rollup 5 for Exchange Server 2007 Service Pack 1 8.1.336.1 11/20/2008
KB953467
Update Rollup 6 for Exchange Server 2007 Service Pack 1 8.1.340.1 2/10/2009 KB959241
Update Rollup 7 for Exchange Server 2007 Service Pack 1 8.1.359.2 3/18/2009 KB960384
Update Rollup 8 for Exchange Server 2007 Service Pack 1 8.1.375.2 5/19/2009 KB968012
Update Rollup 9 for Exchange Server 2007 Service Pack 1 8.1.393.1 7/17/2009 KB970162
Update Rollup 10 for Exchange Server 2007 Service Pack 1 8.1.436.0 4/9/2010 KB981407
Exchange Server 2007 Service Pack 2
Product name Build number Date KB
Microsoft Exchange Server 2007 SP2 8.2.176.2 8/24/2009
Update Rollup 1 for Exchange Server 2007 Service Pack 2 8.2.217.3 11/19/2009 KB971534
Update Rollup 2 for Exchange Server 2007 Service Pack 2 8.2.234.1 1/22/2010 KB972076
Update Rollup 3 for Exchange Server 2007 Service Pack 2 8.2.247.2 3/17/2010 KB979784
Update Rollup 4 for Exchange Server 2007 Service Pack 2 8.2.254.0 4/9/2010 KB981383
Update Rollup 5 for Exchange Server 2007 Service Pack 2 8.2.305.3 12/7/2010 KB2407132
Exchange Server 2007 Service Pack 3
Product name Build number Date KB
Microsoft Exchange Server 2007 SP3 8.3.083.6 6/20/2010
Update Rollup 1 for Exchange Server 2007 Service Pack 3 8.3.106.2 9/9/2010 KB2279665
Update Rollup 2 for Exchange Server 2007 Service Pack 3 8.3.137.3 12/10/2010 KB2407025
Update Rollup 3 for Exchange Server 2007 Service Pack 3 8.3.159.0 3/2/2011 KB2492691
Update Rollup 3-v2 for Exchange Server 2007 Service Pack 3 8.3.159.2 3/30/2011 KB2530488
Update Rollup 4 for Exchange Server 2007 Service Pack 3 8.3.192.1 7/7/2011 KB2509911
Update Rollup 5 for Exchange Server 2007 Service Pack 3 8.3.213.1 9/21/2011 KB2602324
Update Rollup 6 for Exchange Server 2007 Service Pack 3 8.3.245.2 1/25/2012 KB2608656
Update Rollup 7 for Exchange Server 2007 Service Pack 3 8.3.264.0 4/16/2012 KB2655203
Update Rollup 8 for Exchange Server 2007 Service Pack 3 8.3.279.3 8/13/2012 KB2734232
Update Rollup 8-v2 for Exchange Server 2007 Service Pack 3 8.3.279.5 10/9/2012 KB2756497
Update Rollup 8-v3 for Exchange Server 2007 Service Pack 3 8.3.279.6 11/13/2012 KB2778154
Update Rollup 9 for Exchange Server 2007 Service Pack 3 8.3.297.2 12/10/2012 KB2746157
Update Rollup 10 for Exchange Server 2007 Service Pack 3 8.3.298.3 2/11/2013 KB2788321
Update Rollup 11 for Exchange Server 2007 Service Pack 3 8.3.327.1 8/13/2013 KB28737461
Exchange Server 2010
Product name Build number Date KB
Microsoft Exchange Server 2010 RTM 14.0.639.21 11/9/2009
Update Rollup 1 for Exchange Server 2010 14.0.682.1 12/9/2009 KB976573
Update Rollup 2 for Exchange Server 2010 14.0.689.0 3/4/2010 KB979611
Update Rollup 3 for Exchange Server 2010 14.0.694.0 4/9/2010 KB981401
Update Rollup 4 for Exchange Server 2010 14.0.702.1 6/17/2010 KB982639
Update Rollup 5 for Exchange Server 2010 14.0.726.0 12/13/2010 KB2407113
Exchange Server 2010 Service Pack 1
Product name Build number Date KB
Microsoft Exchange Server 2010 SP1 14.1.218.15 8/24/2010
Update Rollup 1 for Exchange Server 2010 SP1 14.1.255.2 10/4/2010 KB2407028
Update Rollup 2 for Exchange Server 2010 SP1 14.1.270.1 12/9/2010 KB2425179
Update Rollup 3 for Exchange Server 2010 SP1 14.1.289.3 3/7/2011 KB2492690
Update Rollup 3-v3 for Exchange Server 2010 SP1 14.1.289.7 4/1/2011 KB2529939
Update Rollup 4 for Exchange Server 2010 SP1 14.1.323.1 6/22/2011 KB2509910
Update Rollup 4-v2 for Exchange Server 2010 SP1 14.1.323.6 7/27/2011 KB2579150
Update Rollup 5 for Exchange Server 2010 SP1 14.1.339.1 8/23/2011 KB2582113
Update Rollup 6 for Exchange Server 2010 SP1 14.1.355.2 10/27/2011 KB2608646
Update Rollup 7 for Exchange Server 2010 SP1 14.1.421.0 8/13/2012 KB2743248
Update Rollup 7-v2 for Exchange Server 2010 SP1 14.1.421.2 10/9/2012 KB2756496
Update Rollup 7-v3 for Exchange Server 2010 SP1 14.1.421.3 11/12/2012 KB2778158
Update Rollup 8 for Exchange Server 2010 SP1 14.1.438.0 12/10/2012 KB2787763
Exchange Server 2010 Service Pack 2
Product name Build number Date KB
Microsoft Exchange Server 2010 SP2 14.2.247.5 12/4/2011
Update Rollup 1 for Exchange Server 2010 SP2 14.2.283.3 2/13/2012 KB2645995
Update Rollup 2 for Exchange Server 2010 SP2 14.2.298.4 4/16/2012 KB2661854
Update Rollup 3 for Exchange Server 2010 SP2 14.2.309.2 5/29/2012 KB2685289
Update Rollup 4 for Exchange Server 2010 SP2 14.2.318.2 8/13/2012 KB2706690
Update Rollup 4-v2 for Exchange Server 2010 SP2 14.2.318.4 10/9/2012 KB2756485
Update Rollup 5 for Exchange Server 2010 SP2 14.2.328.5 11/13/2012 KB2719800
Update Rollup 5-v2 for Exchange Server 2010 SP2 14.2.328.10 12/10/2012 KB2785908
Update Rollup 6 for Exchange Server 2010 SP2 14.2.342.3 2/11/2013 KB2746164
Update Rollup 7 for Exchange Server 2010 SP2 14.2.375.0 8/13/2013 KB2874216
Exchange Server 2010 Service Pack 3
Product name Build number Date KB
Microsoft Exchange Server 2010 SP3 14.3.123.4 2/12/2013 KB2808208
Update Rollup 1 for Exchange Server 2010 SP3 14.3.146.0 5/29/2013 KB2803727
Update Rollup 2 for Exchange Server 2010 SP3 14.3.158.1
8/13/2013 KB2866475
Exchange Server 2013
Product name Build number Date KB
Microsoft Exchange Server 2013 Preview 15.0.466.13 7/16/2012
Microsoft Exchange Server 2013 RTM 15.0.516.32 10/11/2012
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