https://community.sophos.com/email-appliance/f/discussions/81587/unable-to-install-sopphos-puremessage-4-0-3---exchange-2013-error-1603Hi, This morning i try to update our version of Puremessage From 4.0.2 to 4.0.3 to resolve an issue with Exchange 2013 and i always got an error. i decided to uninstall, reboot and try to do a clean installation of the version 4.0.3 but now i receiveen-USTelligent Community 12https://community.sophos.com/thread/309217?ContentTypeID=1Wed, 19 Oct 2016 14:30:21 GMT4be5eb7d-caa4-4ff5-8e60-8f9463545a35:c4568396-bc3a-47af-b8b4-e2a6158286cdlferrara<p>Also,</p> <p>have a look at this thread too:</p> <p><a href="/products/puremessage/f/sophos-puremessage/81488/sophos-puremessage-4-0-3-installation-failure-on-an-exchange-server-2016-with-cu3">https://community.sophos.com/products/puremessage/f/sophos-puremessage/81488/sophos-puremessage-4-0-3-installation-failure-on-an-exchange-server-2016-with-cu3</a></p><div style="clear:both;"></div>https://community.sophos.com/thread/309215?ContentTypeID=1Wed, 19 Oct 2016 14:26:00 GMT4be5eb7d-caa4-4ff5-8e60-8f9463545a35:488bfd5a-5589-4beb-834c-95c7f7573bd6lferrara<p>Eric,</p> <p>did you try the solution from this KB?</p> <p><a href="/kb/zh-cn/26084">https://community.sophos.com/kb/zh-cn/26084</a></p> <p>Thanks</p><div style="clear:both;"></div>