diff --git a/web/locales/en/plugin__monitoring-plugin.json b/web/locales/en/plugin__monitoring-plugin.json
index f665d086..2f7a72a1 100644
--- a/web/locales/en/plugin__monitoring-plugin.json
+++ b/web/locales/en/plugin__monitoring-plugin.json
@@ -83,6 +83,10 @@
   "1d": "1d",
   "2d": "2d",
   "1w": "1w",
+  "Comment is required.": "Comment is required.",
+  "Alertmanager URL not set": "Alertmanager URL not set",
+  "Error saving Silence": "Error saving Silence",
+  "Forbidden: Missing permissions for silences": "Forbidden: Missing permissions for silences",
   "Silences temporarily mute alerts based on a set of label selectors that you define. Notifications will not be sent for alerts that match all the listed values or regular expressions.": "Silences temporarily mute alerts based on a set of label selectors that you define. Notifications will not be sent for alerts that match all the listed values or regular expressions.",
   "Duration": "Duration",
   "Silence alert from...": "Silence alert from...",
@@ -135,9 +139,6 @@
   "404: Not Found": "404: Not Found",
   "{{labels}} content is not available in the catalog at this time due to loading failures.": "{{labels}} content is not available in the catalog at this time due to loading failures.",
   "No datapoints found.": "No datapoints found.",
-  "Namespaces": "Namespaces",
-  "Project": "Project",
-  "Projects": "Projects",
   "Create new option \"{{option}}\"": "Create new option \"{{option}}\"",
   "Filter options": "Filter options",
   "Clear input value": "Clear input value",
@@ -177,6 +178,8 @@
   "No results match the filter criteria.": "No results match the filter criteria.",
   "Clear filters": "Clear filters",
   "Select project...": "Select project...",
+  "Projects": "Projects",
+  "Project": "Project",
   "Dashboard": "Dashboard",
   "Refresh off": "Refresh off",
   "{{count}} second_one": "{{count}} second",
diff --git a/web/src/components/alerting/SilenceForm.tsx b/web/src/components/alerting/SilenceForm.tsx
index 50c78275..46915709 100644
--- a/web/src/components/alerting/SilenceForm.tsx
+++ b/web/src/components/alerting/SilenceForm.tsx
@@ -1,7 +1,6 @@
 import {
   consoleFetchJSON,
   DocumentTitle,
-  NamespaceBar,
   useActiveNamespace,
 } from '@openshift-console/dynamic-plugin-sdk';
 import {
@@ -51,7 +50,7 @@ import { ExternalLink } from '../console/utils/link';
 import { useBoolean } from '../hooks/useBoolean';
 import { getSilenceAlertUrl, usePerspective } from '../hooks/usePerspective';
 import { DataTestIDs } from '../data-test';
-import { getAlertmanagerSilencesUrl } from '../utils';
+import { ALL_NAMESPACES_KEY, getAlertmanagerSilencesUrl } from '../utils';
 import { useAlerts } from '../../hooks/useAlerts';
 import { useMonitoring } from '../../hooks/useMonitoring';
 
@@ -136,6 +135,7 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
   const [namespace] = useActiveNamespace();
   const { prometheus } = useMonitoring();
   const navigate = useNavigate();
+  const isPageNamespaceLocked = isNamespaced && namespace !== ALL_NAMESPACES_KEY;
 
   const durations = useMemo(() => {
     return {
@@ -187,7 +187,7 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
   // Since the namespace matcher MUST be the same as the namespace the request is being
   // made in, we remove the namespace value here and re-add it before sending the request
   const [matchers, setMatchers] = useState<Array<Matcher>>(
-    (isNamespaced
+    (isPageNamespaceLocked
       ? (defaults.matchers as Matcher[])?.filter((matcher) => matcher.name !== 'namespace')
       : defaults.matchers) ?? [{ isRegex: false, isEqual: true, name: '', value: '' }],
   );
@@ -211,7 +211,7 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
   };
 
   const setMatcherField = (i: number, field: string, v: string | boolean): void => {
-    const newMatchers = _.clone(matchers);
+    const newMatchers = _.cloneDeep(matchers);
     _.set(newMatchers, [i, field], v);
     setMatchers(newMatchers);
   };
@@ -221,11 +221,6 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
   };
 
   const removeMatcher = (i: number): void => {
-    // If we require the namespace don't allow removing it
-    if (isNamespaced && i === 0) {
-      return;
-    }
-
     const newMatchers = _.clone(matchers);
     newMatchers.splice(i, 1);
 
@@ -242,17 +237,17 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
 
     // Don't allow comments to only contain whitespace
     if (_.trim(comment) === '') {
-      setError('Comment is required.');
+      setError(t('Comment is required.'));
       return;
     }
 
     const url = getAlertmanagerSilencesUrl({
       prometheus,
       namespace,
-      useTenancyPath: isNamespaced,
+      useTenancyPath: isPageNamespaceLocked,
     });
     if (!url) {
-      setError('Alertmanager URL not set');
+      setError(t('Alertmanager URL not set'));
       return;
     }
 
@@ -269,7 +264,7 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
       createdBy,
       endsAt: saveEndsAt.toISOString(),
       id: defaults.id,
-      matchers: isNamespaced
+      matchers: isPageNamespaceLocked
         ? matchers.concat({
             name: 'namespace',
             value: namespace,
@@ -282,7 +277,11 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
 
     consoleFetchJSON
       .post(
-        getAlertmanagerSilencesUrl({ prometheus, namespace, useTenancyPath: isNamespaced }),
+        getAlertmanagerSilencesUrl({
+          prometheus,
+          namespace,
+          useTenancyPath: isPageNamespaceLocked,
+        }),
         body,
       )
       .then(({ silenceID }) => {
@@ -291,10 +290,13 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
         navigate(getSilenceAlertUrl(perspective, silenceID));
       })
       .catch((err) => {
-        const errorMessage =
+        let errorMessage =
           typeof _.get(err, 'json') === 'string'
             ? _.get(err, 'json')
-            : err.message || 'Error saving Silence';
+            : err.message || t('Error saving Silence');
+        if (errorMessage === 'Forbidden') {
+          errorMessage = t('Forbidden: Missing permissions for silences');
+        }
         setError(errorMessage);
         setInProgress(false);
       });
@@ -309,7 +311,6 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
   return (
     <>
       <DocumentTitle>{title}</DocumentTitle>
-      {isNamespaced && <NamespaceBar />}
       <PageSection hasBodyWrapper={false}>
         <Title headingLevel="h1">{title}</Title>
         <HelperText>
@@ -425,7 +426,7 @@ const SilenceForm_: FC<SilenceFormProps> = ({ defaults, Info, title, isNamespace
             </HelperText>
           </FormHelperText>
 
-          {isNamespaced && (
+          {isPageNamespaceLocked && (
             <Grid key={'namespace'} sm={12} md={4} hasGutter>
               <GridItem>
                 <FormGroup label={t('Label name')}>