diff --git a/apps/trading/components/vega-wallet-connect-button/vega-wallet-connect-button.tsx b/apps/trading/components/vega-wallet-connect-button/vega-wallet-connect-button.tsx
index b905aaf56..dd26d0708 100644
--- a/apps/trading/components/vega-wallet-connect-button/vega-wallet-connect-button.tsx
+++ b/apps/trading/components/vega-wallet-connect-button/vega-wallet-connect-button.tsx
@@ -24,7 +24,13 @@ import classNames from 'classnames';
 import { useGetCurrentRouteId } from '../../lib/hooks/use-get-current-route-id';
 import { useT } from '../../lib/use-t';
 
-export const VegaWalletConnectButton = () => {
+export const VegaWalletConnectButton = ({
+  intent = Intent.None,
+  onClick,
+}: {
+  intent?: Intent;
+  onClick?: () => void;
+}) => {
   const t = useT();
   const [dropdownOpen, setDropdownOpen] = useState(false);
   const openVegaWalletDialog = useVegaWalletDialogStore(
@@ -117,9 +123,12 @@ export const VegaWalletConnectButton = () => {
   return (
     <Button
       data-testid="connect-vega-wallet"
-      onClick={openVegaWalletDialog}
+      onClick={() => {
+        onClick?.();
+        openVegaWalletDialog();
+      }}
       size="small"
-      intent={Intent.None}
+      intent={intent}
       icon={<VegaIcon name={VegaIconNames.ARROW_RIGHT} size={14} />}
     >
       <span className="whitespace-nowrap uppercase">
diff --git a/apps/trading/lib/hooks/use-wallet-disconnected-toasts.tsx b/apps/trading/lib/hooks/use-wallet-disconnected-toasts.tsx
new file mode 100644
index 000000000..7a8d120b2
--- /dev/null
+++ b/apps/trading/lib/hooks/use-wallet-disconnected-toasts.tsx
@@ -0,0 +1,62 @@
+import {
+  Intent,
+  useToasts,
+  ToastHeading,
+  CLOSE_AFTER,
+} from '@vegaprotocol/ui-toolkit';
+import { useVegaWallet } from '@vegaprotocol/wallet';
+import { useEffect, useMemo } from 'react';
+import { useT } from '../use-t';
+import { VegaWalletConnectButton } from '../../components/vega-wallet-connect-button';
+
+const WALLET_DISCONNECTED_TOAST_ID = 'WALLET_DISCONNECTED_TOAST_ID';
+
+export const useWalletDisconnectedToasts = () => {
+  const t = useT();
+  const [hasToast, setToast, updateToast] = useToasts((state) => [
+    state.hasToast,
+    state.setToast,
+    state.update,
+  ]);
+  const { isAlive } = useVegaWallet();
+
+  const toast = useMemo(
+    () => ({
+      id: WALLET_DISCONNECTED_TOAST_ID,
+      intent: Intent.Danger,
+      content: (
+        <>
+          <ToastHeading>{t('Wallet connection lost')}</ToastHeading>
+          <p>{t('The connection to the Vega wallet has been lost.')}</p>
+          <p className="mt-2">
+            <VegaWalletConnectButton
+              intent={Intent.Danger}
+              onClick={() => {
+                updateToast(WALLET_DISCONNECTED_TOAST_ID, {
+                  hidden: true,
+                });
+              }}
+            />
+          </p>
+        </>
+      ),
+      onClose: () => {
+        updateToast(WALLET_DISCONNECTED_TOAST_ID, {
+          hidden: true,
+        });
+      },
+      closeAfter: CLOSE_AFTER,
+    }),
+    [t, updateToast]
+  );
+
+  useEffect(() => {
+    if (isAlive === false) {
+      if (hasToast(WALLET_DISCONNECTED_TOAST_ID)) {
+        updateToast(WALLET_DISCONNECTED_TOAST_ID, { hidden: false });
+      } else {
+        setToast(toast);
+      }
+    }
+  }, [hasToast, isAlive, setToast, t, toast, updateToast]);
+};
diff --git a/apps/trading/pages/toasts-manager.tsx b/apps/trading/pages/toasts-manager.tsx
index 25ad557cc..9c76f092b 100644
--- a/apps/trading/pages/toasts-manager.tsx
+++ b/apps/trading/pages/toasts-manager.tsx
@@ -6,6 +6,7 @@ import { useEthereumWithdrawApprovalsToasts } from '@vegaprotocol/web3';
 import { useReadyToWithdrawalToasts } from '@vegaprotocol/withdraws';
 import { Links } from '../lib/links';
 import { useReferralToasts } from '../client-pages/referrals/hooks/use-referral-toasts';
+import { useWalletDisconnectedToasts } from '../lib/hooks/use-wallet-disconnected-toasts';
 
 export const ToastsManager = () => {
   useProposalToasts();
@@ -16,6 +17,7 @@ export const ToastsManager = () => {
     withdrawalsLink: Links.PORTFOLIO(),
   });
   useReferralToasts();
+  useWalletDisconnectedToasts();
 
   const toasts = useToasts((store) => store.toasts);
   return <ToastsContainer order="desc" toasts={toasts} />;
diff --git a/libs/wallet/src/connectors/injected-connector.ts b/libs/wallet/src/connectors/injected-connector.ts
index dbe9f106e..0faae5c61 100644
--- a/libs/wallet/src/connectors/injected-connector.ts
+++ b/libs/wallet/src/connectors/injected-connector.ts
@@ -68,6 +68,19 @@ export class InjectedConnector implements VegaConnector {
     return res.keys;
   }
 
+  async isAlive() {
+    try {
+      const keys = await window.vega.listKeys();
+      if (keys.keys.length > 0) {
+        return true;
+      }
+    } catch (err) {
+      return false;
+    }
+
+    return false;
+  }
+
   disconnect() {
     clearConfig();
     return window.vega.disconnectWallet();
diff --git a/libs/wallet/src/connectors/json-rpc-connector.ts b/libs/wallet/src/connectors/json-rpc-connector.ts
index 89a611d2f..63db02041 100644
--- a/libs/wallet/src/connectors/json-rpc-connector.ts
+++ b/libs/wallet/src/connectors/json-rpc-connector.ts
@@ -123,12 +123,31 @@ export class JsonRpcConnector implements VegaConnector {
     }
   }
 
+  async isAlive() {
+    if (this.client) {
+      try {
+        const keys = await this.client.ListKeys();
+        if (keys.result.keys.length > 0) {
+          return true;
+        }
+      } catch (err) {
+        return false;
+      }
+    }
+
+    return false;
+  }
+
   async disconnect() {
     if (!this.client) {
       throw ClientErrors.NO_CLIENT;
     }
 
-    await this.client.DisconnectWallet();
+    try {
+      await this.client.DisconnectWallet();
+    } catch (err) {
+      // NOOP
+    }
     clearConfig();
   }
 
diff --git a/libs/wallet/src/connectors/snap-connector.ts b/libs/wallet/src/connectors/snap-connector.ts
index 89744f613..0ec823c1a 100644
--- a/libs/wallet/src/connectors/snap-connector.ts
+++ b/libs/wallet/src/connectors/snap-connector.ts
@@ -167,6 +167,19 @@ export class SnapConnector implements VegaConnector {
     return res?.keys;
   }
 
+  async isAlive() {
+    try {
+      const keys = await this.listKeys();
+      if (keys.keys.length > 0) {
+        return true;
+      }
+    } catch (err) {
+      return false;
+    }
+
+    return false;
+  }
+
   async sendTx(pubKey: string, transaction: Transaction) {
     if (!this.nodeAddress) throw SnapConnectorErrors.NODE_ADDRESS_NOT_SET;
     if (!this.snapId) throw SnapConnectorErrors.SNAP_ID_NOT_SET;
diff --git a/libs/wallet/src/connectors/vega-connector.ts b/libs/wallet/src/connectors/vega-connector.ts
index 2d32b1c3e..f3a42d498 100644
--- a/libs/wallet/src/connectors/vega-connector.ts
+++ b/libs/wallet/src/connectors/vega-connector.ts
@@ -543,4 +543,9 @@ export interface VegaConnector {
     pubkey: string,
     transaction: Transaction
   ) => Promise<TransactionResponse | null>;
+
+  /**
+   * Checks if the connection to the connector is alive.
+   */
+  isAlive: () => Promise<boolean>;
 }
diff --git a/libs/wallet/src/connectors/view-connector.tsx b/libs/wallet/src/connectors/view-connector.tsx
index fc8a95418..408692837 100644
--- a/libs/wallet/src/connectors/view-connector.tsx
+++ b/libs/wallet/src/connectors/view-connector.tsx
@@ -39,6 +39,11 @@ export class ViewConnector implements VegaConnector {
       },
     ]);
   }
+
+  async isAlive() {
+    return true;
+  }
+
   disconnect(): Promise<void> {
     clearConfig();
     this.pubkey = null;
diff --git a/libs/wallet/src/context.ts b/libs/wallet/src/context.ts
index c2f53f9da..0b559af82 100644
--- a/libs/wallet/src/context.ts
+++ b/libs/wallet/src/context.ts
@@ -56,6 +56,11 @@ export interface VegaWalletContextShape {
     chromeExtensionUrl: string;
     mozillaExtensionUrl: string;
   };
+
+  /**
+   * A flag determining whether the current connection is alive.
+   */
+  isAlive: boolean | null;
 }
 
 export const VegaWalletContext = createContext<
diff --git a/libs/wallet/src/provider.spec.tsx b/libs/wallet/src/provider.spec.tsx
index 1852ccf71..3b5631622 100644
--- a/libs/wallet/src/provider.spec.tsx
+++ b/libs/wallet/src/provider.spec.tsx
@@ -1,4 +1,4 @@
-import { act, renderHook } from '@testing-library/react';
+import { act, renderHook, waitFor } from '@testing-library/react';
 import type { Transaction } from './connectors';
 import { ViewConnector, JsonRpcConnector } from './connectors';
 import { useVegaWallet } from './use-vega-wallet';
@@ -7,6 +7,7 @@ import { VegaWalletProvider } from './provider';
 import { LocalStorage } from '@vegaprotocol/utils';
 import type { ReactNode } from 'react';
 import { WALLET_KEY } from './storage';
+import { DEFAULT_KEEP_ALIVE } from './use-is-alive';
 
 const jsonRpcConnector = new JsonRpcConnector();
 const viewConnector = new ViewConnector();
@@ -35,6 +36,7 @@ const setup = (config?: Partial<VegaWalletConfig>) => {
 describe('VegaWalletProvider', () => {
   afterAll(() => {
     localStorage.clear();
+    jest.useRealTimers();
   });
 
   const mockPubKeys = [
@@ -81,6 +83,7 @@ describe('VegaWalletProvider', () => {
         browserList: expect.any(String),
         ...defaultConfig.links,
       },
+      isAlive: null,
     });
 
     // Connect
@@ -179,4 +182,27 @@ describe('VegaWalletProvider', () => {
     });
     expect(result.current.isReadOnly).toBe(true);
   });
+
+  it('sets isAlive to false if connection lost', async () => {
+    // setup and connect
+    jest.useFakeTimers();
+    jest
+      .spyOn(jsonRpcConnector, 'isAlive')
+      .mockImplementation(() => Promise.resolve(true));
+    const { result } = setup();
+    await act(async () => {
+      result.current.connect(jsonRpcConnector);
+    });
+    expect(result.current.isAlive).toEqual(null);
+
+    // loose connection
+    jest
+      .spyOn(jsonRpcConnector, 'isAlive')
+      .mockImplementation(() => Promise.resolve(false));
+    jest.advanceTimersByTime(DEFAULT_KEEP_ALIVE);
+
+    await waitFor(() => {
+      expect(result.current.isAlive).toEqual(false);
+    });
+  });
 });
diff --git a/libs/wallet/src/provider.tsx b/libs/wallet/src/provider.tsx
index d5d38df5c..e3b5e40ef 100644
--- a/libs/wallet/src/provider.tsx
+++ b/libs/wallet/src/provider.tsx
@@ -1,5 +1,12 @@
 import { LocalStorage } from '@vegaprotocol/utils';
-import { useCallback, useMemo, useRef, useState, type ReactNode } from 'react';
+import {
+  useCallback,
+  useMemo,
+  useRef,
+  useState,
+  type ReactNode,
+  useEffect,
+} from 'react';
 import { WalletClientError } from '@vegaprotocol/wallet-client';
 import { type VegaWalletContextShape } from '.';
 import {
@@ -11,6 +18,7 @@ import { VegaWalletContext } from './context';
 import { WALLET_KEY, WALLET_RISK_ACCEPTED_KEY } from './storage';
 import { ViewConnector } from './connectors';
 import { useLocalStorage } from '@vegaprotocol/react-helpers';
+import { DEFAULT_KEEP_ALIVE, useIsAlive } from './use-is-alive';
 
 type Networks =
   | 'MAINNET'
@@ -33,6 +41,7 @@ export interface VegaWalletConfig {
   vegaUrl: string;
   vegaWalletServiceUrl: string;
   links: VegaWalletLinks;
+  keepAlive?: number;
 }
 
 const ExternalLinks = {
@@ -143,6 +152,19 @@ export const VegaWalletProvider = ({
   const acknowledgeNeeded =
     config.network === 'MAINNET' && riskAcceptedValue !== 'true';
 
+  const isAlive = useIsAlive(
+    connector.current && pubKey ? connector.current : null,
+    config.keepAlive != null ? config.keepAlive : DEFAULT_KEEP_ALIVE
+  );
+  /**
+   * Force disconnect if connected and wallet is unreachable.
+   */
+  useEffect(() => {
+    if (isAlive === false) {
+      disconnect();
+    }
+  }, [disconnect, isAlive]);
+
   const contextValue = useMemo<VegaWalletContextShape>(() => {
     return {
       vegaUrl: config.vegaUrl,
@@ -165,6 +187,7 @@ export const VegaWalletProvider = ({
       sendTx,
       fetchPubKeys,
       acknowledgeNeeded,
+      isAlive,
     };
   }, [
     config,
@@ -177,6 +200,7 @@ export const VegaWalletProvider = ({
     sendTx,
     fetchPubKeys,
     acknowledgeNeeded,
+    isAlive,
   ]);
 
   return (
diff --git a/libs/wallet/src/use-is-alive.ts b/libs/wallet/src/use-is-alive.ts
new file mode 100644
index 000000000..f13a51534
--- /dev/null
+++ b/libs/wallet/src/use-is-alive.ts
@@ -0,0 +1,31 @@
+import { useEffect, useState } from 'react';
+import { type VegaConnector } from '.';
+
+/**
+ * Determines the interval for checking if wallet connection is alive.
+ */
+export const DEFAULT_KEEP_ALIVE = 1000;
+
+export const useIsAlive = (
+  connector: VegaConnector | null,
+  interval: number
+) => {
+  const [alive, setAlive] = useState<boolean | null>(null);
+
+  useEffect(() => {
+    if (!connector) {
+      return;
+    }
+
+    const i = setInterval(() => {
+      connector.isAlive().then((isAlive) => {
+        if (alive !== isAlive) setAlive(isAlive);
+      });
+    }, interval);
+    return () => {
+      clearInterval(i);
+    };
+  }, [alive, connector, interval]);
+
+  return alive;
+};