Zimbra Connector for Outlook (ZCO): Supported Versions of Windows and Outlook.
Supported Versions of Microsoft Windows®
ZCO is supported on the following Microsoft Operating Systems:
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Windows 10
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Windows 8.1
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Windows 7, Service Pack 1 (End of life: January 14, 2020.)
All operating systems must have the latest updates from Microsoft.
Supported Versions of Microsoft Outlook®
ZCO is supported on the following versions of Microsoft Outlook:
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Outlook 2016: 32-bit and 64-bit editions of Microsoft Office
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Outlook 2013: 32-bit and 64-bit editions of Microsoft Office
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Outlook 2010: 32-bit and 64-bit editions of Microsoft Office (End of life: October 13, 2020.)
Note:
Click to run versions of Outlook 2010 are not supported.
If Outlook is upgraded to a different version, ZCO must be uninstalled and reinstalled. This is particularly important following an upgrade to OL2013, as ZCO needs to be installed to a different location on the client computer.