diff --git a/src/components/Dashboard/context/ApiServerContext.jsx b/src/components/Dashboard/context/ApiServerContext.jsx
index c0e3d5d1..d5638695 100644
--- a/src/components/Dashboard/context/ApiServerContext.jsx
+++ b/src/components/Dashboard/context/ApiServerContext.jsx
@@ -717,12 +717,17 @@ const ApiServerProvider = ({ children }) => {
 
   const connectToServer = useCallback(() => {
     if (token && authenticated == true) {
-      if (socketRef.current) {
+      if (socketRef.current?.authToken === token) {
         if (!socketRef.current.connected) {
           socketRef.current.connect()
         }
         return
       }
+      if (socketRef.current) {
+        const previousSocket = socketRef.current
+        socketRef.current = null
+        previousSocket.disconnect()
+      }
 
       logger.debug('Token is available, connecting to api server...')
 
@@ -738,6 +743,7 @@ const ApiServerProvider = ({ children }) => {
       if (typeof newSocket.io?.reconnection === 'function') {
         newSocket.io.reconnection(false)
       }
+      newSocket.authToken = token
 
       setConnecting(true)
 
diff --git a/src/components/Dashboard/context/AuthContext.jsx b/src/components/Dashboard/context/AuthContext.jsx
index 639c9059..c92a4eb3 100644
--- a/src/components/Dashboard/context/AuthContext.jsx
+++ b/src/components/Dashboard/context/AuthContext.jsx
@@ -30,6 +30,9 @@ import {
   getAuthCookies,
   setAuthCookies,
   clearAuthCookies,
+  getSlicerAuthSession,
+  setSlicerAuthSession,
+  clearSlicerAuthSession,
   areCookiesEnabled,
   validateAuthCookies,
   setupCookieSync,
@@ -68,6 +71,30 @@ const AuthProvider = ({ children }) => {
   const [notificationApi, notificationContextHolder] =
     notification.useNotification()
   const [initialWebAuth] = useState(() => {
+    // The slicer opens through a one-time app-password link. Never reuse a
+    // saved FarmControl login, which expires and replaces that session.
+    if (window.location.pathname === '/slicer') {
+      const hasAuthCode = new URLSearchParams(window.location.search).has(
+        'authCode'
+      )
+      const slicerSession = hasAuthCode ? null : getSlicerAuthSession()
+      if (slicerSession?.token) {
+        return {
+          retrieved: true,
+          token: slicerSession.token,
+          expiresAt: slicerSession.expiresAt,
+          user: slicerSession.user,
+          authenticated: true
+        }
+      }
+      return {
+        retrieved: true,
+        token: null,
+        expiresAt: null,
+        user: null,
+        authenticated: false
+      }
+    }
     if (detectIsElectron()) {
       return { retrieved: false }
     }
@@ -134,9 +161,13 @@ const AuthProvider = ({ children }) => {
   })
   sessionRef.current = { token, expiresAt, userProfile, authenticated }
   const isDesktopHelperRoute = location.pathname.startsWith('/desktop')
+  const isSlicerRoute = location.pathname === '/slicer'
   const slicerAppKey = getSlicerAppKey(location)
   const suppressUnauthorizedModal =
-    isDesktopHelperRoute || Boolean(slicerAppKey) || slicerAuthPending
+    isDesktopHelperRoute ||
+    isSlicerRoute ||
+    Boolean(slicerAppKey) ||
+    slicerAuthPending
 
   var redirectType = 'web'
 
@@ -183,6 +214,13 @@ const AuthProvider = ({ children }) => {
 
   const persistSession = useCallback(
     async ({ token: nextToken, expiresAt: nextExpiresAt, user: nextUser }) => {
+      if (locationRef.current?.pathname === '/slicer') {
+        return setSlicerAuthSession({
+          access_token: nextToken,
+          expires_at: nextExpiresAt,
+          user: nextUser
+        })
+      }
       if (isElectron) {
         return await setAuthSession({
           token: nextToken,
@@ -200,6 +238,9 @@ const AuthProvider = ({ children }) => {
   )
 
   const clearPersistedSession = useCallback(async () => {
+    if (locationRef.current?.pathname === '/slicer') {
+      return clearSlicerAuthSession()
+    }
     if (isElectron) {
       return await clearAuthSession()
     }
@@ -283,13 +324,19 @@ const AuthProvider = ({ children }) => {
     // An auth code represents a newly completed login and must take precedence
     // over any existing persisted session.
     if (
+      location.pathname === '/slicer' ||
       location.pathname === '/applaunch' ||
       location.pathname.startsWith('/desktop') ||
       authCode != null
     ) {
-      if (location.pathname.startsWith('/desktop')) {
+      if (
+        location.pathname === '/slicer' ||
+        location.pathname.startsWith('/desktop')
+      ) {
         setRetreivedTokenFromCookies(true)
-        setInitialized(true)
+        if (location.pathname.startsWith('/desktop')) {
+          setInitialized(true)
+        }
       }
       return
     }
@@ -306,6 +353,7 @@ const AuthProvider = ({ children }) => {
   useEffect(() => {
     if (isElectron) return
     const cleanupCookieSync = setupCookieSync(() => {
+      if (locationRef.current?.pathname === '/slicer') return
       try {
         if (validateAuthCookies()) {
           const {
@@ -658,6 +706,10 @@ const AuthProvider = ({ children }) => {
     let intervalId
 
     const tokenRefresh = () => {
+      if (locationRef.current?.pathname === '/slicer') {
+        notificationApi.destroy('token-expiration')
+        return
+      }
       if (expiresAt) {
         const now = new Date()
         const expirationDate = new Date(expiresAt)
@@ -878,6 +930,7 @@ const AuthProvider = ({ children }) => {
         open={
           showSessionExpiredModal &&
           !isDesktopHelperRoute &&
+          !isSlicerRoute &&
           !loading &&
           !showAuthErrorModal
         }
diff --git a/src/utils/cookies.js b/src/utils/cookies.js
index 1e63f2d1..8efa1f33 100644
--- a/src/utils/cookies.js
+++ b/src/utils/cookies.js
@@ -7,6 +7,7 @@ const COOKIE_OPTIONS = {
 }
 
 const AUTH_STORAGE_KEY = 'farmcontrol.auth'
+const SLICER_AUTH_STORAGE_KEY = 'farmcontrol.slicerAuth'
 const LEGACY_AUTH_COOKIE_NAMES = ['authToken', 'authExpiresAt', 'user']
 
 const getAuthExpiryTime = (expiresAt) => {
@@ -325,3 +326,63 @@ export const clearAuthCookies = () => {
   }
   clearLegacyAuthCookies()
 }
+
+const readStoredSession = (storageKey) => {
+  const raw = window.localStorage.getItem(storageKey)
+  if (!raw) return null
+  const session = parseStoredSession(raw)
+  const expirationTime = getAuthExpiryTime(session.expiresAt)
+  if (
+    !session.token ||
+    !Number.isFinite(expirationTime) ||
+    expirationTime <= Date.now()
+  ) {
+    window.localStorage.removeItem(storageKey)
+    return null
+  }
+  return session
+}
+
+/**
+ * Slicer app-password sessions are stored apart from the normal login so a
+ * short-lived FarmControl session cannot replace or expire them.
+ */
+export const getSlicerAuthSession = () => {
+  try {
+    return readStoredSession(SLICER_AUTH_STORAGE_KEY)
+  } catch (error) {
+    console.error('Error reading slicer auth session:', error)
+    return null
+  }
+}
+
+export const setSlicerAuthSession = (authData) => {
+  try {
+    if (!authData?.access_token || !authData?.expires_at) {
+      console.warn('Auth data is required')
+      return false
+    }
+
+    const existing = getSlicerAuthSession()
+    const serialized = serializeAuthSession(authData, existing?.user)
+    if (window.localStorage.getItem(SLICER_AUTH_STORAGE_KEY) === serialized) {
+      return true
+    }
+
+    window.localStorage.setItem(SLICER_AUTH_STORAGE_KEY, serialized)
+    return true
+  } catch (error) {
+    console.error('Error setting slicer auth session:', error)
+    return false
+  }
+}
+
+export const clearSlicerAuthSession = () => {
+  try {
+    window.localStorage.removeItem(SLICER_AUTH_STORAGE_KEY)
+    return true
+  } catch (error) {
+    console.error('Error clearing slicer auth session:', error)
+    return false
+  }
+}