Recentrly I have been doing some tests on Winzip installation throught the network and had to make some questions to Winzip help cause it is suggested to uninstall before updating to 9.0. This might be helpfull.
Winzip response to silent uninstall and Command Line Support Add-On silent instalation.
Quote:
While removal of the software is suggested, it is not in fact actually
required.
WinZip 8.1 -only- will accept the /quninstall switch when executed from
the command line, which will remove the software without further action;
prior releases accept only the /uninstall switch, which does produce a
confirmation dialog.
While there's no option for installing the WinZip Command Line Support
Add-On in an unattended operation, please note that installation is not
actually required. You can simply open the WZCLINE installation file
using WinZip, extract the contents, then copy the extracted files to the
WinZip program folder, typically, C:\program files\winzip. The add on
is recognized as registered when placed with a registered copy of WinZip
itself.
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Life is fine.
