On Monday, November 11, 2013, at approximately 5:00PM UTC, Microsoft identified an issue in which some customers that installed or upgraded to the most recent build of DirSync (version 1.0.6553.0002, released on November 5, 2013) may have encountered failures that caused their latest sync cycle to not complete.
This may have resulted in delays in updating the Windows Azure Active Directory data with on-premises changes. Other symptoms may have included receiving “Directory Sync Error Report” emails due to synchronizing objects encountering errors. Engineers successfully updated the DirSync build on Monday, November 11, 2013 at 7:00PM UTC.
A complete post-incident report will be available on the Service Health Dashboard within five business days. Please note: If you are encountering this issue, uninstall the latest installed build and install the build currently available through the Admin portal, or use the direct link: Windows Azure Active Directory Sync tool 64 bit.
Updated Azure DirSync is this: