diff --git a/core/http/react-ui/src/App.css b/core/http/react-ui/src/App.css
index e7bbdffe9..2ff91d98b 100644
--- a/core/http/react-ui/src/App.css
+++ b/core/http/react-ui/src/App.css
@@ -365,6 +365,7 @@
   align-items: center;
   gap: var(--spacing-sm);
   flex: 1;
+  min-width: 0;
 }
 
 .operation-spinner {
@@ -379,6 +380,8 @@
 .operation-text {
   font-size: 0.8125rem;
   color: var(--color-text-secondary);
+  overflow: hidden;
+  text-overflow: ellipsis;
 }
 
 .operation-progress {
@@ -403,11 +406,12 @@
 }
 
 .operation-cancel {
+  flex-shrink: 0;
   background: none;
   border: none;
   color: var(--color-text-muted);
   cursor: pointer;
-  padding: 2px;
+  padding: 4px 6px;
   font-size: 0.875rem;
 }
 .operation-cancel:hover {
diff --git a/core/http/react-ui/src/components/OperationsBar.jsx b/core/http/react-ui/src/components/OperationsBar.jsx
index de52b1c4e..ae25712db 100644
--- a/core/http/react-ui/src/components/OperationsBar.jsx
+++ b/core/http/react-ui/src/components/OperationsBar.jsx
@@ -1,7 +1,7 @@
 import { useOperations } from '../hooks/useOperations'
 
 export default function OperationsBar() {
-  const { operations, cancelOperation } = useOperations()
+  const { operations, cancelOperation, dismissFailedOp } = useOperations()
 
   if (operations.length === 0) return null
 
@@ -10,7 +10,9 @@ export default function OperationsBar() {
       {operations.map(op => (
         <div key={op.jobID || op.id} className="operation-item">
           <div className="operation-info">
-            {op.isCancelled ? (
+            {op.error ? (
+              <i className="fas fa-circle-exclamation" style={{ color: 'var(--color-error)', marginRight: 'var(--spacing-xs)' }} />
+            ) : op.isCancelled ? (
               <i className="fas fa-ban" style={{ color: 'var(--color-warning)', marginRight: 'var(--spacing-xs)' }} />
             ) : op.isDeletion ? (
               <i className="fas fa-trash" style={{ color: 'var(--color-error)', marginRight: 'var(--spacing-xs)' }} />
@@ -18,34 +20,53 @@ export default function OperationsBar() {
               <div className="operation-spinner" />
             )}
             <span className="operation-text">
-              {op.isDeletion ? 'Removing' : 'Installing'}{' '}
-              {op.isBackend ? 'backend' : 'model'}: {op.name || op.id}
+              {op.error ? (
+                <>
+                  Failed to install {op.isBackend ? 'backend' : 'model'}: {op.name || op.id}
+                  <span style={{ fontSize: '0.75rem', color: 'var(--color-text-muted)', marginLeft: 'var(--spacing-xs)' }}>
+                    ({op.error})
+                  </span>
+                </>
+              ) : (
+                <>
+                  {op.isDeletion ? 'Removing' : 'Installing'}{' '}
+                  {op.isBackend ? 'backend' : 'model'}: {op.name || op.id}
+                </>
+              )}
             </span>
-            {op.isQueued && (
+            {!op.error && op.isQueued && (
               <span style={{ fontSize: '0.75rem', color: 'var(--color-text-muted)', marginLeft: 'var(--spacing-xs)' }}>
                 (Queued)
               </span>
             )}
-            {op.isCancelled && (
+            {!op.error && op.isCancelled && (
               <span style={{ fontSize: '0.75rem', color: 'var(--color-warning)', marginLeft: 'var(--spacing-xs)' }}>
                 Cancelling...
               </span>
             )}
-            {op.message && !op.isQueued && !op.isCancelled && (
+            {!op.error && op.message && !op.isQueued && !op.isCancelled && (
               <span style={{ fontSize: '0.75rem', color: 'var(--color-text-muted)', marginLeft: 'var(--spacing-xs)' }}>
                 {op.message}
               </span>
             )}
-            {op.progress !== undefined && op.progress > 0 && (
+            {!op.error && op.progress !== undefined && op.progress > 0 && (
               <span className="operation-progress">{Math.round(op.progress)}%</span>
             )}
           </div>
-          {op.progress !== undefined && op.progress > 0 && (
+          {!op.error && op.progress !== undefined && op.progress > 0 && (
             <div className="operation-bar-container">
               <div className="operation-bar" style={{ width: `${op.progress}%` }} />
             </div>
           )}
-          {op.cancellable && !op.isCancelled && (
+          {op.error ? (
+            <button
+              className="operation-cancel"
+              onClick={() => dismissFailedOp(op.id)}
+              title="Dismiss"
+            >
+              <i className="fas fa-xmark" />
+            </button>
+          ) : op.cancellable && !op.isCancelled ? (
             <button
               className="operation-cancel"
               onClick={() => cancelOperation(op.jobID)}
@@ -53,7 +74,7 @@ export default function OperationsBar() {
             >
               <i className="fas fa-xmark" />
             </button>
-          )}
+          ) : null}
         </div>
       ))}
     </div>
diff --git a/core/http/react-ui/src/hooks/useOperations.js b/core/http/react-ui/src/hooks/useOperations.js
index e4e23eebc..bb0a57670 100644
--- a/core/http/react-ui/src/hooks/useOperations.js
+++ b/core/http/react-ui/src/hooks/useOperations.js
@@ -14,11 +14,18 @@ export function useOperations(pollInterval = 1000) {
       const data = await operationsApi.list()
       const ops = data?.operations || (Array.isArray(data) ? data : [])
       setOperations(ops)
-      // Auto-refresh the page when all operations complete (mirrors original behavior)
-      if (previousCountRef.current > 0 && ops.length === 0) {
+
+      // Separate active (non-failed) operations from failed ones
+      const activeOps = ops.filter(op => !op.error)
+      const failedOps = ops.filter(op => op.error)
+
+      // Auto-refresh the page when all active operations complete (mirrors original behavior)
+      // but not when there are still failed operations being shown
+      if (previousCountRef.current > 0 && activeOps.length === 0 && failedOps.length === 0) {
         setTimeout(() => window.location.reload(), 1000)
       }
-      previousCountRef.current = ops.length
+      previousCountRef.current = activeOps.length
+
       setError(null)
     } catch (err) {
       setError(err.message)
@@ -36,6 +43,19 @@ export function useOperations(pollInterval = 1000) {
     }
   }, [fetchOperations])
 
+  // Dismiss a failed operation (acknowledge the error and remove it)
+  const dismissFailedOp = useCallback(async (opId) => {
+    try {
+      const op = operations.find(o => o.id === opId)
+      if (op?.jobID) {
+        await operationsApi.dismiss(op.jobID)
+        await fetchOperations()
+      }
+    } catch {
+      // Ignore dismiss errors
+    }
+  }, [operations, fetchOperations])
+
   useEffect(() => {
     fetchOperations()
     intervalRef.current = setInterval(fetchOperations, pollInterval)
@@ -44,5 +64,5 @@ export function useOperations(pollInterval = 1000) {
     }
   }, [fetchOperations, pollInterval])
 
-  return { operations, loading, error, cancelOperation, refetch: fetchOperations }
+  return { operations, loading, error, cancelOperation, dismissFailedOp, refetch: fetchOperations }
 }
diff --git a/core/http/react-ui/src/pages/Backends.jsx b/core/http/react-ui/src/pages/Backends.jsx
index 3723c7ca0..24c2a5fcf 100644
--- a/core/http/react-ui/src/pages/Backends.jsx
+++ b/core/http/react-ui/src/pages/Backends.jsx
@@ -87,7 +87,6 @@ export default function Backends() {
   const handleInstall = async (id) => {
     try {
       await backendsApi.install(id)
-      addToast(`Installing backend ${id}...`, 'info')
     } catch (err) {
       addToast(`Install failed: ${err.message}`, 'error')
     }
@@ -112,7 +111,6 @@ export default function Backends() {
       if (manualName.trim()) body.name = manualName.trim()
       if (manualAlias.trim()) body.alias = manualAlias.trim()
       await backendsApi.installExternal(body)
-      addToast('Installing backend...', 'info')
       setManualUri('')
       setManualName('')
       setManualAlias('')
diff --git a/core/http/react-ui/src/pages/Models.jsx b/core/http/react-ui/src/pages/Models.jsx
index 9bb698d80..dd112cc32 100644
--- a/core/http/react-ui/src/pages/Models.jsx
+++ b/core/http/react-ui/src/pages/Models.jsx
@@ -198,7 +198,6 @@ export default function Models() {
     try {
       setInstalling(prev => new Set(prev).add(modelId))
       await modelsApi.install(modelId)
-      addToast(`Installing ${modelId}...`, 'info')
     } catch (err) {
       addToast(`Failed to install: ${err.message}`, 'error')
     }
@@ -215,6 +214,25 @@ export default function Models() {
     }
   }
 
+  // Clear local installing flags when operations finish (success or error)
+  useEffect(() => {
+    if (installing.size === 0) return
+    setInstalling(prev => {
+      const next = new Set(prev)
+      let changed = false
+      for (const modelId of prev) {
+        const hasActiveOp = operations.some(op =>
+          op.name === modelId && !op.completed && !op.error
+        )
+        if (!hasActiveOp) {
+          next.delete(modelId)
+          changed = true
+        }
+      }
+      return changed ? next : prev
+    })
+  }, [operations, installing.size])
+
   const isInstalling = (modelId) => {
     return installing.has(modelId) || operations.some(op =>
       op.name === modelId && !op.completed && !op.error
diff --git a/core/http/react-ui/src/utils/api.js b/core/http/react-ui/src/utils/api.js
index 3011bfd6d..260dd0b9f 100644
--- a/core/http/react-ui/src/utils/api.js
+++ b/core/http/react-ui/src/utils/api.js
@@ -130,6 +130,7 @@ export const resourcesApi = {
 export const operationsApi = {
   list: () => fetchJSON(API_CONFIG.endpoints.operations),
   cancel: (jobID) => postJSON(API_CONFIG.endpoints.cancelOperation(jobID), {}),
+  dismiss: (jobID) => postJSON(API_CONFIG.endpoints.dismissOperation(jobID), {}),
 }
 
 // Settings API
diff --git a/core/http/react-ui/src/utils/config.js b/core/http/react-ui/src/utils/config.js
index c82dfc24b..5bc0cbd5e 100644
--- a/core/http/react-ui/src/utils/config.js
+++ b/core/http/react-ui/src/utils/config.js
@@ -3,6 +3,7 @@ export const API_CONFIG = {
     // Operations
     operations: '/api/operations',
     cancelOperation: (jobID) => `/api/operations/${jobID}/cancel`,
+    dismissOperation: (jobID) => `/api/operations/${jobID}/dismiss`,
 
     // Models gallery
     models: '/api/models',
diff --git a/core/http/routes/ui_api.go b/core/http/routes/ui_api.go
index d70010a5a..1cd5c2af6 100644
--- a/core/http/routes/ui_api.go
+++ b/core/http/routes/ui_api.go
@@ -80,8 +80,8 @@ func RegisterUIAPIRoutes(app *echo.Echo, cl *config.ModelConfigLoader, ml *model
 			message := ""
 
 			if status != nil {
-				// Skip completed operations (unless cancelled and not yet cleaned up)
-				if status.Processed && !status.Cancelled {
+				// Skip successfully completed operations
+				if status.Processed && !status.Cancelled && status.Error == nil {
 					continue
 				}
 				// Skip cancelled operations that are processed (they're done, no need to show)
@@ -131,7 +131,7 @@ func RegisterUIAPIRoutes(app *echo.Echo, cl *config.ModelConfigLoader, ml *model
 				}
 			}
 
-			operations = append(operations, map[string]interface{}{
+			opData := map[string]interface{}{
 				"id":          galleryID,
 				"name":        displayName,
 				"fullName":    galleryID,
@@ -144,7 +144,11 @@ func RegisterUIAPIRoutes(app *echo.Echo, cl *config.ModelConfigLoader, ml *model
 				"isCancelled": isCancelled,
 				"cancellable": isCancellable,
 				"message":     message,
-			})
+			}
+			if status != nil && status.Error != nil {
+				opData["error"] = status.Error.Error()
+			}
+			operations = append(operations, opData)
 		}
 
 		// Sort operations by progress (ascending), then by ID for stable display order
@@ -188,6 +192,20 @@ func RegisterUIAPIRoutes(app *echo.Echo, cl *config.ModelConfigLoader, ml *model
 		})
 	})
 
+	// Dismiss a failed operation (acknowledge the error and remove it from the list)
+	app.POST("/api/operations/:jobID/dismiss", func(c echo.Context) error {
+		jobID := c.Param("jobID")
+		xlog.Debug("API request to dismiss operation", "jobID", jobID)
+
+		// Remove the operation from the opcache so it no longer appears
+		opcache.DeleteUUID(jobID)
+
+		return c.JSON(200, map[string]interface{}{
+			"success": true,
+			"message": "Operation dismissed",
+		})
+	})
+
 	// Model Gallery APIs
 	app.GET("/api/models", func(c echo.Context) error {
 		term := c.QueryParam("term")