From 76ad2717018b75421072e83ea7b5d94ff7a5cc7a Mon Sep 17 00:00:00 2001
From: didiergbenou-ms <117292083+didiergbenou-ms@users.noreply.github.com>
Date: Fri, 29 Aug 2025 07:19:02 +0200
Subject: [PATCH] Clarify export behavior of diagnostic settings

This behavior makes sense but one of my customers was confused about it. Noticed we do not have a current statement on our docs for this.
---
 articles/azure-monitor/platform/diagnostic-settings.md | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/articles/azure-monitor/platform/diagnostic-settings.md b/articles/azure-monitor/platform/diagnostic-settings.md
index 658447ee0e..a3c993635b 100644
--- a/articles/azure-monitor/platform/diagnostic-settings.md
+++ b/articles/azure-monitor/platform/diagnostic-settings.md
@@ -184,7 +184,10 @@ To create or edit a diagnostic setting with the Azure Monitor REST API, see [Dia
 
 ---
 
-
+> [!NOTE]
+> Diagnostic settings in Azure only export data generated after the diagnostic setting is enabled.
+> Historical data that was created before the diagnostic setting was configured will not be exported.
+> To ensure you capture all necessary logs moving forward, enable diagnostic settings as early as possible.
    
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