Require Windows Installer 4.5 or higher As advised by the VC 11 merge modules. Windows Installer 4.5 requires Windows Server 2008, Windows Vista, Windows XP with Service Pack 2 (SP2) and later, or Windows Server 2003 with Service Pack 1 (SP1) and later. I believe we already enforce these restrictions manually elsewhere, so this should not restrict our set of valid target machines. https://github.com/krb5/krb5/commit/35602228f3c49a0fa0c096236c9653af8d72f42e Author: Ben Kaduk Commit: 35602228f3c49a0fa0c096236c9653af8d72f42e Branch: master src/windows/installer/wix/config.wxi | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)