From dfbd4fb983f0f789da8130906ea0bfd2ae51e717 Mon Sep 17 00:00:00 2001
From: Richard Grover <38992201+richgrov@users.noreply.github.com>
Date: Wed, 13 Nov 2024 08:02:22 -0700
Subject: [PATCH 1/2] Error if AZURE_ACCOUNT_NAME not set

---
 internal/backend/azure/azure.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/internal/backend/azure/azure.go b/internal/backend/azure/azure.go
index c1c049a94..27390ee13 100644
--- a/internal/backend/azure/azure.go
+++ b/internal/backend/azure/azure.go
@@ -62,6 +62,11 @@ func open(cfg Config, rt http.RoundTripper) (*Backend, error) {
 	} else {
 		endpointSuffix = "core.windows.net"
 	}
+
+	if cfg.AccountName == "" {
+		return nil, errors.Fatalf("unable to open Azure backend: Account name ($AZURE_ACCOUNT_NAME) is empty")
+	}
+
 	url := fmt.Sprintf("https://%s.blob.%s/%s", cfg.AccountName, endpointSuffix, cfg.Container)
 	opts := &azContainer.ClientOptions{
 		ClientOptions: azcore.ClientOptions{

From 548fa07577e5733a6acf6e472e88c2c3cee9f1b8 Mon Sep 17 00:00:00 2001
From: Richard Grover <38992201+richgrov@users.noreply.github.com>
Date: Fri, 15 Nov 2024 14:46:34 -0700
Subject: [PATCH 2/2] Add changelog info

---
 changelog/unreleased/pull-5141 | 7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 changelog/unreleased/pull-5141

diff --git a/changelog/unreleased/pull-5141 b/changelog/unreleased/pull-5141
new file mode 100644
index 000000000..7f71f2269
--- /dev/null
+++ b/changelog/unreleased/pull-5141
@@ -0,0 +1,7 @@
+Enhancement: Provide clear error message if AZURE_ACCOUNT_NAME is not set
+
+If AZURE_ACCOUNT_NAME is not set, any command related to an Azure repository
+would result in a misleading networking error. Restic will now detect this and
+provide a clear warning that the variable is not defined.
+
+https://github.com/restic/restic/pull/5141