From 2fe26866db6d36472bcc1151b2df2867de47ad75 Mon Sep 17 00:00:00 2001
From: Copilot <198982749+Copilot@users.noreply.github.com>
Date: Mon, 24 Aug 2026 00:28:32 +0200
Subject: [PATCH] hyperv: fix dynamic_memory_vm sub-collector failing on Server
 2019 due to missing Guest Available Memory counter (#2480)

Co-authored-by: jkroepke <1560587+jkroepke@users.noreply.github.com>
---
 internal/collector/hyperv/hyperv_dynamic_memory_vm.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/internal/collector/hyperv/hyperv_dynamic_memory_vm.go b/internal/collector/hyperv/hyperv_dynamic_memory_vm.go
index b94084af..6147ba0f 100644
--- a/internal/collector/hyperv/hyperv_dynamic_memory_vm.go
+++ b/internal/collector/hyperv/hyperv_dynamic_memory_vm.go
@@ -50,7 +50,7 @@ type perfDataCounterValuesDynamicMemoryVM struct {
 	// Hyper-V Dynamic Memory VM metrics
 	VmMemoryAddedMemory                float64 `perfdata:"Added Memory"`
 	VmMemoryCurrentPressure            float64 `perfdata:"Current Pressure"`
-	VmMemoryGuestAvailableMemory       float64 `perfdata:"Guest Available Memory"        perfdata_min_build:"17763"`
+	VmMemoryGuestAvailableMemory       float64 `perfdata:"Guest Available Memory"        perfdata_min_build:"20348"`
 	VmMemoryGuestVisiblePhysicalMemory float64 `perfdata:"Guest Visible Physical Memory"`
 	VmMemoryMaximumPressure            float64 `perfdata:"Maximum Pressure"`
 	VmMemoryMemoryAddOperations        float64 `perfdata:"Memory Add Operations"`
@@ -153,7 +153,7 @@ func (c *Collector) collectDynamicMemoryVM(ch chan<- prometheus.Metric) error {
 			data.Name,
 		)
 
-		if osversion.Build() >= osversion.LTSC2019 {
+		if osversion.Build() >= osversion.LTSC2022 {
 			ch <- prometheus.MustNewConstMetric(
 				c.vmMemoryGuestAvailableMemory,
 				prometheus.GaugeValue,