From df757178cbf612dde83c80e075cb3493c1dd9d8d Mon Sep 17 00:00:00 2001
From: Ben Lucato <ben.lucato@gmail.com>
Date: Wed, 7 Oct 2020 15:14:56 +1100
Subject: [PATCH] Allow MSI upgrades.

---
 .../buildscripts/packaging/msi/opentelemetry-collector.wxs     | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/buildscripts/packaging/msi/opentelemetry-collector.wxs b/internal/buildscripts/packaging/msi/opentelemetry-collector.wxs
index 97cba9acc86..c957b5b3fc2 100644
--- a/internal/buildscripts/packaging/msi/opentelemetry-collector.wxs
+++ b/internal/buildscripts/packaging/msi/opentelemetry-collector.wxs
@@ -9,6 +9,9 @@
       <Property Id="ARPNOREPAIR" Value="1"/>
       <Property Id="ARPNOMODIFY" Value="1"/>
 
+      <MajorUpgrade
+         DowngradeErrorMessage="A later version of OpenTelemetry Collector Contrib is already installed. Setup will now exit."/>
+
       <Feature Id="Feature" Level="1">
          <ComponentRef Id="ApplicationComponent"/>
       </Feature>