diff --git a/apps/desktop/package.json b/apps/desktop/package.json
index 6669ad0..62e9416 100644
--- a/apps/desktop/package.json
+++ b/apps/desktop/package.json
@@ -1,6 +1,6 @@
 {
   "name": "desktop",
-  "version": "0.0.66",
+  "version": "0.0.67",
   "description": "Calimero Desktop Application",
   "type": "module",
   "scripts": {
diff --git a/apps/desktop/src-tauri/src/main.rs b/apps/desktop/src-tauri/src/main.rs
index 6c431f2..22cd742 100644
--- a/apps/desktop/src-tauri/src/main.rs
+++ b/apps/desktop/src-tauri/src/main.rs
@@ -899,12 +899,33 @@ async fn create_app_window(
 
     // Configure IPC scope BEFORE showing window
     // This allows windows with unique labels (domain + timestamp) to access Tauri IPC
-    let remote_access = tauri::ipc::RemoteDomainAccessScope::new(domain)
-        .add_window(&window_label)
-        .enable_tauri_api();
-    app_handle.ipc_scope().configure_remote_access(remote_access);
+    //
+    // Tauri v1 matches IPC scopes by EXACT domain (no wildcards), and the
+    // browser-style login flow navigates this same window to the node's auth
+    // page (e.g. http://localhost:2528/auth/login). Without a scope for the
+    // node's host, every IPC call from that page fails with
+    // "Scope not defined for URL". Register the app domain, the node host and
+    // localhost. Note: Url::domain() returns None for IP hosts (127.0.0.1),
+    // so scopes can never match IP-hosted pages — the injected proxy script
+    // falls back to native fetch there (plain-HTTP pages don't need the proxy).
+    let mut scope_domains: Vec<String> = vec![domain.to_string(), "localhost".to_string()];
+    if let Some(node_host) = node_url_to_use
+        .parse::<url::Url>()
+        .ok()
+        .and_then(|u| u.host_str().map(str::to_string))
+    {
+        scope_domains.push(node_host);
+    }
+    scope_domains.sort();
+    scope_domains.dedup();
+    for scope_domain in &scope_domains {
+        let remote_access = tauri::ipc::RemoteDomainAccessScope::new(scope_domain)
+            .add_window(&window_label)
+            .enable_tauri_api();
+        app_handle.ipc_scope().configure_remote_access(remote_access);
+    }
 
-    info!("[Tauri] Configured IPC scope for domain: {} on window: {}", domain, window_label);
+    info!("[Tauri] Configured IPC scope for domains: {:?} on window: {}", scope_domains, window_label);
 
     // Camera/microphone for WebRTC video calls (e.g. Mero Meet) needs no extra
     // work here: wry's own WKUIDelegate already grants
diff --git a/apps/desktop/src-tauri/src/proxy_script.js b/apps/desktop/src-tauri/src/proxy_script.js
index a7115dd..933afe7 100644
--- a/apps/desktop/src-tauri/src/proxy_script.js
+++ b/apps/desktop/src-tauri/src/proxy_script.js
@@ -24,6 +24,24 @@
         }
     }
 
+    // The proxy exists solely to bypass mixed-content blocking: HTTPS-hosted
+    // app pages cannot fetch http://localhost directly. When the page itself
+    // is served over plain HTTP (e.g. the node's auth frontend at
+    // http://localhost:2528/auth/login after a logout → browser-style login
+    // navigation), native fetch works fine — and Tauri v1 IPC scopes are
+    // exact-domain matches registered for the app's original domain, so
+    // invoking the proxy from a localhost-origin page fails with
+    // "Scope not defined for URL". Never proxy from non-HTTPS pages.
+    function pageNeedsProxy() {
+        try {
+            return window.location.protocol === 'https:';
+        } catch (e) {
+            // No usable location (shouldn't happen in a real webview) —
+            // keep the historical always-proxy behavior.
+            return true;
+        }
+    }
+
     // Is this the app's `POST /auth/refresh` call?
     //
     // Refresh tokens are single-use (calimero-network/core#3083): whoever calls
@@ -278,9 +296,14 @@
 
         // Proxy any HTTP localhost request (any port) to avoid mixed content blocking.
         // The Rust backend validates the URL before proxying.
-        // /auth/refresh is always routed through here — even for a non-localhost
-        // node — so the brokered sentinel can never reach the network.
-        const shouldProxy = isHttpLocalhost(urlStr) || isAuthRefresh(urlStr, effectiveMethod);
+        // Mixed-content proxying only applies to an HTTPS-hosted page (finding
+        // #145: proxying from a plain-HTTP localhost page fails the Tauri IPC
+        // scope check). But /auth/refresh is ALWAYS routed through here — even
+        // for a non-localhost node — so the brokered sentinel can never reach
+        // the network.
+        const shouldProxy =
+            (pageNeedsProxy() && isHttpLocalhost(urlStr)) ||
+            isAuthRefresh(urlStr, effectiveMethod);
         console.log('[Tauri Proxy] Should proxy?', shouldProxy, 'for URL:', urlStr);
 
         if (shouldProxy) {
@@ -364,13 +387,15 @@
                     headers: new Headers(response.headers)
                 });
             } catch (error) {
-                console.error('[Tauri Proxy] Fetch proxy failed:', error, 'URL:', urlStr);
-                const isTauri = typeof window.__TAURI_INVOKE__ === 'function' ||
-                    (typeof window.__TAURI__ !== 'undefined' && typeof window.__TAURI__.invoke === 'function');
-                if (!isTauri) {
-                    return originalFetch.apply(this, arguments);
+                if (error instanceof DOMException && error.name === 'AbortError') {
+                    throw error;
                 }
-                throw error;
+                // Last resort: try the native fetch. If the proxy failed for an
+                // IPC scope error while the page can reach localhost natively,
+                // this recovers; if mixed content blocks it, it fails the same
+                // way the proxy just did.
+                console.error('[Tauri Proxy] Fetch proxy failed, falling back to native fetch:', error, 'URL:', urlStr);
+                return originalFetch.apply(this, arguments);
             }
         }
 
@@ -402,7 +427,9 @@
         };
 
         xhr.send = function(body) {
-            const shouldProxy = isHttpLocalhost(xhrUrl) || isAuthRefresh(xhrUrl, xhrMethod);
+            const shouldProxy =
+                (pageNeedsProxy() && isHttpLocalhost(xhrUrl)) ||
+                isAuthRefresh(xhrUrl, xhrMethod);
 
             if (shouldProxy) {
                 console.log('[Tauri Proxy] XHR intercepted:', xhrMethod, xhrUrl);
@@ -438,12 +465,20 @@
                         xhr.dispatchEvent(new ProgressEvent('loadend'));
                     })
                     .catch(function(error) {
-                        console.error('[Tauri Proxy] XHR proxy failed:', error, 'URL:', xhrUrl);
-                        if (typeof xhr.onerror === 'function') {
-                            xhr.onerror(new ProgressEvent('error'));
+                        // Same last-resort fallback as fetch: open() already ran
+                        // on the real XHR, so a native send() can still succeed
+                        // (e.g. when only the IPC scope was the problem).
+                        console.error('[Tauri Proxy] XHR proxy failed, falling back to native XHR:', error, 'URL:', xhrUrl);
+                        try {
+                            originalSend(body);
+                        } catch (sendError) {
+                            console.error('[Tauri Proxy] Native XHR fallback failed:', sendError, 'URL:', xhrUrl);
+                            if (typeof xhr.onerror === 'function') {
+                                xhr.onerror(new ProgressEvent('error'));
+                            }
+                            xhr.dispatchEvent(new ProgressEvent('error'));
+                            xhr.dispatchEvent(new ProgressEvent('loadend'));
                         }
-                        xhr.dispatchEvent(new ProgressEvent('error'));
-                        xhr.dispatchEvent(new ProgressEvent('loadend'));
                     });
                 return;
             }
diff --git a/apps/desktop/src-tauri/tauri.conf.json b/apps/desktop/src-tauri/tauri.conf.json
index a7faa92..f573604 100644
--- a/apps/desktop/src-tauri/tauri.conf.json
+++ b/apps/desktop/src-tauri/tauri.conf.json
@@ -8,7 +8,7 @@
   },
   "package": {
     "productName": "Calimero Desktop",
-    "version": "0.0.66"
+    "version": "0.0.67"
   },
   "tauri": {
     "allowlist": {
@@ -89,14 +89,7 @@
     },
     "security": {
       "csp": "default-src 'self' 'unsafe-inline' 'unsafe-eval' http://localhost:* http://127.0.0.1:* https://api.github.com; connect-src 'self' https://apps.calimero.network https://*.calimero.network http://localhost:* http://127.0.0.1:* ws://localhost:* ws://127.0.0.1:* wss://* https: http: ws: wss: https://api.github.com https://github.com; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https: http:; font-src 'self' data:; frame-src 'self' https: http:;",
-      "dangerousRemoteDomainIpcAccess": [
-        {
-          "domain": "*",
-          "windows": ["*"],
-          "plugins": [],
-          "enableTauriAPI": true
-        }
-      ],
+      "dangerousRemoteDomainIpcAccess": [],
       "dangerousDisableAssetCspModification": true
     },
     "systemTray": {
diff --git a/apps/desktop/src/utils/proxyScript.test.ts b/apps/desktop/src/utils/proxyScript.test.ts
index aab921c..091d998 100644
--- a/apps/desktop/src/utils/proxyScript.test.ts
+++ b/apps/desktop/src/utils/proxyScript.test.ts
@@ -30,7 +30,7 @@ function injectProxy(mockWindow: any, nodeUrl = "http://localhost:2428") {
   new Function("window", src)(mockWindow);
 }
 
-function makeMockWindow() {
+function makeMockWindow(pageProtocol = "https:") {
   // Minimal XMLHttpRequest stub. The script wraps open/send/setRequestHeader and
   // dispatches events on the instance, so those must exist for it to wrap them.
   function FakeXHR(this: any) {
@@ -47,6 +47,9 @@ function makeMockWindow() {
   };
   return {
     __TAURI_FETCH_PROXY_INJECTED__: undefined as boolean | undefined,
+    // The proxy only runs on HTTPS-hosted pages (mixed-content bypass);
+    // default the mock to an HTTPS page so proxy-path tests exercise it.
+    location: { protocol: pageProtocol },
     // Stored by the script as `originalFetch` — returned for non-proxied URLs.
     fetch: vi.fn().mockResolvedValue(new Response("original", { status: 200 })),
     XMLHttpRequest: FakeXHR,
@@ -148,6 +151,27 @@ describe("proxy_script SSE routing", () => {
     expect(mockWindow.__TAURI_INVOKE__).not.toHaveBeenCalled();
   });
 
+  it("does not invoke Tauri IPC when the page itself is plain HTTP (e.g. the node's auth page)", async () => {
+    // Pages served over http:// (like http://localhost:2528/auth/login after
+    // a logout → browser-style login) have no mixed-content problem, and the
+    // window's IPC scope may not cover their origin — native fetch must be
+    // used instead of the proxy.
+    const mockWindow = makeMockWindow("http:");
+    mockWindow.__TAURI_INVOKE__ = vi.fn();
+    mockWindow.__TAURI__ = {
+      event: { listen: vi.fn(async () => vi.fn()) },
+    };
+
+    injectProxy(mockWindow);
+
+    const response = await mockWindow.fetch(
+      "http://localhost:2528/auth/providers",
+      { headers: { Accept: "application/json" } }
+    );
+    expect(mockWindow.__TAURI_INVOKE__).not.toHaveBeenCalled();
+    expect(await response.text()).toBe("original");
+  });
+
   it("does not invoke Tauri IPC for non-SSE localhost requests", async () => {
     const mockWindow = makeMockWindow();
     const tauriInvoke = vi.fn().mockResolvedValue({
diff --git a/merod-config.json b/merod-config.json
index 4cd7416..9ecca21 100644
--- a/merod-config.json
+++ b/merod-config.json
@@ -1,4 +1,4 @@
 {
     "name": "merod binary",
-    "version": "0.11.0-rc.13"
+    "version": "0.11.0-rc.14"
 }
\ No newline at end of file