From 0867fbd9d813691647b3c4d2e8e8db5925f47e41 Mon Sep 17 00:00:00 2001
From: RudiMT <69203001+RudiMT@users.noreply.github.com>
Date: Tue, 2 Mar 2021 20:43:08 +0100
Subject: [PATCH] Add check if EnhancedSessionTransportType is supported by the
 current version of HyperV

---
 .../scripts/set_enhanced_session_transport_type.ps1    | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/plugins/providers/hyperv/scripts/set_enhanced_session_transport_type.ps1 b/plugins/providers/hyperv/scripts/set_enhanced_session_transport_type.ps1
index 29191db37..fe9fad130 100644
--- a/plugins/providers/hyperv/scripts/set_enhanced_session_transport_type.ps1
+++ b/plugins/providers/hyperv/scripts/set_enhanced_session_transport_type.ps1
@@ -17,8 +17,14 @@ try {
 }
 
 try {
-    Hyper-V\Set-VM -VM $VM -EnhancedSessionTransportType $Type
+    # HyperV 1.1 (Windows Server 2012R2) crashes on this call. Vagrantfiles before 2.2.10 do break without skipping this.
+    $present = Get-Command Hyper-V\Set-VM -ParameterName EnhancedSessionTransportType -ErrorAction SilentlyContinue
+    if($present) {
+        Hyper-V\Set-VM -VM $VM -EnhancedSessionTransportType $Type
+    }else{
+        Write-OutputMessage "This version of HyperV does not support EnhancedSessionTransportType, ignoring."
+    }
 } catch {
-    Write-ErrorMessage "Failed to assign EnhancedSessionTransportType to ${Type}: ${PSItem}"
+    Write-ErrorMessage "Failed to assign EnhancedSessionTransportType to ${Type}:${PSItem}"
     exit 1
 }