diff --git a/docs/USAGE.md b/docs/USAGE.md
index 36149314..bededb42 100644
--- a/docs/USAGE.md
+++ b/docs/USAGE.md
@@ -745,22 +745,22 @@ webhook_enabled = "true"
 webhook_public_url = "<public-facing url to reach your webhook>"
 ```
 
-Setting `webhook_enabled` to `true` enables the webhook in 'monitor' mode. The onedrive process will listen for incoming updates at a configurable endpoint, which defaults to `0.0.0.0:8888`. The `webhook_public_url` must be set to an public-facing url for Microsoft to send updates to your webhook. If your host is directly exposed to the Internet, the `webhook_public_url` can be set to `http://<your_host>:8888/` to match the default endpoint. However, the recommended approach is to configure a reverse proxy like nginx.
+Setting `webhook_enabled` to `true` enables the webhook in 'monitor' mode. The onedrive process will listen for incoming updates at a configurable endpoint, which defaults to `0.0.0.0:8888`. The `webhook_public_url` must be set to an public-facing url for Microsoft to send updates to your webhook. If your host is directly exposed to the Internet, the `webhook_public_url` can be set to `http://<your_host_ip>:8888/` to match the default endpoint. However, the recommended approach is to configure a reverse proxy like nginx.
+
+**Note:** A valid HTTPS certificate is required for your public-facing URL if using nginx.
 
 For example, below is a nginx config snippet to proxy traffic into the webhook:
 
 ```
-http {
-  server {
-    listen 80;
-    location /webhooks/onedrive {
-      proxy_pass http://127.0.0.1:8888;
-    }
-  }
+server {
+	listen 80;
+	location /webhooks/onedrive {
+		proxy_pass http://127.0.0.1:8888;
+	}
 }
 ```
 
-With nginx running, you can configure `webhook_public_url` to `http://<your_host>/webhooks/onedrive`.
+With nginx running, you can configure `webhook_public_url` to `https://<your_host>/webhooks/onedrive`.
 
 ### More webhook configuration options
 
diff --git a/src/onedrive.d b/src/onedrive.d
index f811c4eb..6c351bff 100644
--- a/src/onedrive.d
+++ b/src/onedrive.d
@@ -1004,7 +1004,17 @@ final class OneDriveApi
  			"clientState": randomUUID().toString()
 		];
 		http.addRequestHeader("Content-Type", "application/json");
-		JSONValue response = post(url, request.toString());
+		JSONValue response;
+
+		try {
+			response = post(url, request.toString());
+		} catch (OneDriveException e) {
+			displayOneDriveErrorMessage(e.msg, getFunctionName!({}));
+			
+			// We need to exit here, user needs to fix issue
+			log.error("ERROR: Unable to initialize subscriptions for updates. Please fix this issue.");
+			exit(-1);
+		}
 
 		// Save important subscription metadata including id and expiration
 		subscriptionId = response["id"].str;