Trung Tran wrote:

Hi, I want to upgrade my Zope-2.7.1 to the lastest version Zope-2.7.4 in Windows. As far as I know it might be done by simply installing Zope-2.7.4 (using the executale binary Zope-2.7.4-0-win32.exe) over the existing Zope-2.7.1 (meaning the destination directory will be the existing Zope home).

That should work, but means you're stuffed if you want ot go back to 2.7.1 for any reason...

I have created many Zope instances (using Zope-2.7.1) running as Windows services. So if I upgrade the existing Zope-2.7.1 (rather than install Zope-2.7.4 in a new directory) then I don't have to make any change into my existing Zope instances. Could anyone tell that this is the right thing to do it or I would miss anything?

Well, what I've done, and has worked for years on both Linux and Windows, is to install the Zope software in folders related to their version, eg: E:\Zope\2.7.1 E:\Zope\2.7.4 I think create projects as instance homes: E:\Zope\myproject1 E:\Zope\myproject2 Then, all I need to do to upgrade is install the new zope software (putting 2.7.whatever in the location box for the binary installer) and then tweak the start scripts (you'll have to fiddle with the service start scripts) and zope.conf's of the instances I want to upgrade, restart them, and you're done :-) cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk