Live Communications Service /Office Communications Service (LCS/OCS) IM Clients Cannot Send Messages. Windows Application Event log Shows Error Message "Top Level Lock"

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Hotfix Workaround for etrack 2138838

hotfix-2138838-8-16-2011.zip (583.7 KB)

Required Registry Entries for Hotfix

imfilter-64bit.reg (560.0 B)

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