diff --git a/web/public/locales/en/validation.json b/web/public/locales/en/config/validation.json
similarity index 100%
rename from web/public/locales/en/validation.json
rename to web/public/locales/en/config/validation.json
diff --git a/web/src/components/config-form/ConfigForm.tsx b/web/src/components/config-form/ConfigForm.tsx
index da0af36bf..612cf236a 100644
--- a/web/src/components/config-form/ConfigForm.tsx
+++ b/web/src/components/config-form/ConfigForm.tsx
@@ -68,10 +68,10 @@ export function ConfigForm({
   formContext,
   i18nNamespace,
 }: ConfigFormProps) {
-  const { t } = useTranslation([
+  const { t, i18n } = useTranslation([
     i18nNamespace || "common",
     "views/settings",
-    "validation",
+    "config/validation",
   ]);
   const [showAdvanced, setShowAdvanced] = useState(false);
 
@@ -117,7 +117,7 @@ export function ConfigForm({
   );
 
   // Create error transformer for user-friendly error messages
-  const errorTransformer = useMemo(() => createErrorTransformer(t), [t]);
+  const errorTransformer = useMemo(() => createErrorTransformer(i18n), [i18n]);
 
   const handleChange = useCallback(
     (e: IChangeEvent) => {
diff --git a/web/src/lib/config-schema/errorMessages.ts b/web/src/lib/config-schema/errorMessages.ts
index def4e6517..6eae3643c 100644
--- a/web/src/lib/config-schema/errorMessages.ts
+++ b/web/src/lib/config-schema/errorMessages.ts
@@ -2,7 +2,7 @@
 // Maps JSON Schema validation keywords to user-friendly messages
 
 import type { ErrorTransformer } from "@rjsf/utils";
-import type { TFunction } from "i18next";
+import type { i18n as I18n } from "i18next";
 
 export interface ErrorMessageMap {
   [keyword: string]: string | ((params: Record<string, unknown>) => string);
@@ -51,7 +51,9 @@ export const defaultErrorMessages: ErrorMessageMap = {
  * Creates an error transformer function for RJSF
  * Transforms technical JSON Schema errors into user-friendly messages
  */
-export function createErrorTransformer(t: TFunction): ErrorTransformer {
+export function createErrorTransformer(i18n: I18n): ErrorTransformer {
+  const t = i18n.t.bind(i18n);
+
   const getDefaultMessage = (
     errorType: string,
     params: Record<string, unknown>,
@@ -117,31 +119,22 @@ export function createErrorTransformer(t: TFunction): ErrorTransformer {
 
       let message: string | undefined;
 
-      const missingTranslation = "__missing_translation__";
-
       // Try field-specific validation message first
       if (fieldPath) {
         const fieldKey = `${fieldPath}.validation.${errorType}`;
-        const translated = t(fieldKey, {
-          ...normalizedParams,
-          ns: ["config"],
-          defaultValue: missingTranslation,
-        });
-        if (translated !== fieldKey && translated !== missingTranslation) {
-          message = translated;
+        if (i18n.exists(fieldKey)) {
+          message = t(fieldKey, normalizedParams);
         }
       }
 
       // Fall back to generic validation message
       if (!message) {
         const genericKey = errorType;
-        const translated = t(genericKey, {
-          ...normalizedParams,
-          ns: ["validation"],
-          defaultValue: missingTranslation,
-        });
-        if (translated !== genericKey && translated !== missingTranslation) {
-          message = translated;
+        if (i18n.exists(genericKey, { ns: "config/validation" })) {
+          message = t(genericKey, {
+            ...normalizedParams,
+            ns: ["config/validation"],
+          });
         }
       }
 
diff --git a/web/src/utils/i18n.ts b/web/src/utils/i18n.ts
index b53b67ca8..16735fbdb 100644
--- a/web/src/utils/i18n.ts
+++ b/web/src/utils/i18n.ts
@@ -72,6 +72,7 @@ i18n
       "config/semantic_search",
       "config/face_recognition",
       "config/lpr",
+      "config/validation",
     ],
     defaultNS: "common",
 
diff --git a/web/src/views/settings/GlobalConfigView.tsx b/web/src/views/settings/GlobalConfigView.tsx
index e46ef860c..dd0430401 100644
--- a/web/src/views/settings/GlobalConfigView.tsx
+++ b/web/src/views/settings/GlobalConfigView.tsx
@@ -95,6 +95,7 @@ const globalSectionConfigs: Record<
       "tls_client_key",
       "tls_insecure",
     ],
+    liveValidate: true,
   },
   database: {
     i18nNamespace: "config/database",