diff --git a/src/slic3r/GUI/UserAccountCommunication.cpp b/src/slic3r/GUI/UserAccountCommunication.cpp
index 27a8dd2957..78227501aa 100644
--- a/src/slic3r/GUI/UserAccountCommunication.cpp
+++ b/src/slic3r/GUI/UserAccountCommunication.cpp
@@ -512,6 +512,14 @@ void UserAccountCommunication::on_activate_window(bool active)
         std::lock_guard<std::mutex> lck(m_thread_stop_mutex);
         m_window_is_active = active;
     }
+    auto now = std::time(nullptr);
+    BOOST_LOG_TRIVIAL(info) << "UserAccountCommunication activate: active " << active;
+    if (active && m_next_token_refresh_at - now < 60) {
+        BOOST_LOG_TRIVIAL(info) << "Enqueue access token refresh on activation";
+        enqueue_refresh();
+        m_token_timer->Stop();
+    }
+
 }
 
 void UserAccountCommunication::wakeup_session_thread()
@@ -527,12 +535,16 @@ void UserAccountCommunication::set_refresh_time(int seconds)
 {
     assert(m_token_timer);
     m_token_timer->Stop();
-    int miliseconds = std::max(seconds * 1000 - 66666, 60000);
-    m_token_timer->StartOnce(miliseconds);
+    const auto prior_expiration_secs = 5 * 60;
+    int milliseconds = std::max((seconds - prior_expiration_secs) * 1000, 60000);
+    m_next_token_refresh_at = std::time(nullptr) + milliseconds / 1000;
+    m_token_timer->StartOnce(milliseconds);
 }
 
+
 void UserAccountCommunication::on_token_timer(wxTimerEvent& evt)
 {
+    BOOST_LOG_TRIVIAL(info) << "UserAccountCommunication: Token refresh timer fired";
     enqueue_refresh();
 }
 void UserAccountCommunication::on_polling_timer(wxTimerEvent& evt)
diff --git a/src/slic3r/GUI/UserAccountCommunication.hpp b/src/slic3r/GUI/UserAccountCommunication.hpp
index f4ec0dbf99..48d9a62e39 100644
--- a/src/slic3r/GUI/UserAccountCommunication.hpp
+++ b/src/slic3r/GUI/UserAccountCommunication.hpp
@@ -13,7 +13,7 @@
 #include <thread>
 #include <mutex>
 #include <memory>
-#include <wx/timer.h>
+#include <ctime>
 
 namespace Slic3r {
 namespace GUI {
@@ -97,6 +97,7 @@ private:
 
     wxTimer*                                m_token_timer;
     wxEvtHandler*                           m_timer_evt_handler;
+    std::time_t                             m_next_token_refresh_at;
 
     void wakeup_session_thread();
     void init_session_thread();
diff --git a/src/slic3r/GUI/UserAccountSession.cpp b/src/slic3r/GUI/UserAccountSession.cpp
index db81c2984e..860e90cc5d 100644
--- a/src/slic3r/GUI/UserAccountSession.cpp
+++ b/src/slic3r/GUI/UserAccountSession.cpp
@@ -123,6 +123,7 @@ void UserAccountSession::init_with_code(const std::string& code, const std::stri
 
 void UserAccountSession::token_success_callback(const std::string& body)
 {
+    BOOST_LOG_TRIVIAL(debug) << "Access token refreshed";
     // Data we need
     std::string access_token, refresh_token, shared_session_key;
     int expires_in = 300;
@@ -176,6 +177,7 @@ void UserAccountSession::token_success_callback(const std::string& body)
 
 void UserAccountSession::code_exchange_fail_callback(const std::string& body)
 {
+    BOOST_LOG_TRIVIAL(debug) << "Access token refresh failed, body: " << body;
     clear();
     cancel_queue();
     // Unlike refresh_fail_callback, no event was triggered so far, do it. (USER_ACCOUNT_ACTION_CODE_FOR_TOKEN does not send events)
diff --git a/src/slic3r/GUI/WebViewDialog.cpp b/src/slic3r/GUI/WebViewDialog.cpp
index eac2873152..0411a06b84 100644
--- a/src/slic3r/GUI/WebViewDialog.cpp
+++ b/src/slic3r/GUI/WebViewDialog.cpp
@@ -636,6 +636,30 @@ wxString ConnectWebViewPanel::get_login_script(bool refresh)
             window.__access_token_version = 0;
         )",
 #else
+//        R"(
+//        console.log('Preparing login');
+//        function errorHandler(err) {
+//            const msg = {
+//                action: 'ERROR',
+//                error: JSON.stringify(err),
+//                critical: false
+//            };
+//            console.error('Login error occurred', msg);
+//            window._prusaSlicer.postMessage(msg);
+//        };
+//        window.fetch('/slicer/login', {method: 'POST', headers: {Authorization: 'Bearer %s'}})
+//            .then(function (resp) {
+//                console.log('Login resp', resp);
+//                resp.text()
+//                    .then(function (json) { console.log('Login resp body', json); return json; })
+//                    .then(function (body) {
+//                        if (resp.status >= 400) errorHandler({status: resp.status, body});
+//                    });
+//            })
+//            .catch(function (err){
+//                errorHandler({message: err.message, stack: err.stack});
+//            });
+//        )",
         R"(
         console.log('Preparing login');
         function errorHandler(err) {
@@ -647,18 +671,46 @@ wxString ConnectWebViewPanel::get_login_script(bool refresh)
             console.error('Login error occurred', msg);
             window._prusaSlicer.postMessage(msg);
         };
-        window.fetch('/slicer/login', {method: 'POST', headers: {Authorization: 'Bearer %s'}})
-            .then(function (resp) {
-                console.log('Login resp', resp);
-                resp.text()
-                    .then(function (json) { console.log('Login resp body', json); return json; })
-                    .then(function (body) {
-                        if (resp.status >= 400) errorHandler({status: resp.status, body});
-                    });
-            })
-            .catch(function (err){
-                errorHandler({message: err.message, stack: err.stack});
+
+        function delay(ms) {
+            return new Promise((resolve, reject) => {
+                setTimeout(resolve, ms);
             });
+        }
+
+        (async () => {
+            let retry = false;
+            let backoff = 1000;
+            const maxBackoff = 64000;
+            do {
+
+                let error = false;
+
+                try {
+                    console.log('Slicer Login request');
+                    let resp = await fetch('/slicer/login', {method: 'POST', headers: {Authorization: 'Bearer %s'}});
+                    let body = await resp.text();
+                    console.log('Slicer Login resp', resp.status, body);
+                    if (resp.status >= 500) {
+                        retry = true;
+                    } else {
+                        retry = false;
+                        if (resp.status >= 400)
+                            errorHandler({status: resp.status, body});
+                    }
+                } catch (e) {
+                    console.error('Slicer Login failed', e.toString());
+                    retry = true;
+                }
+
+                if (retry) {
+                    await delay(backoff + 1000 * Math.random());
+                    if (backoff < maxBackoff) {
+                        backoff *= 2;
+                    }
+                }
+            } while (retry);
+       })();
         )",
 #endif
         access_token
@@ -691,6 +743,7 @@ void ConnectWebViewPanel::on_script_message(wxWebViewEvent& evt)
 }
 void ConnectWebViewPanel::on_navigation_request(wxWebViewEvent &evt) 
 {
+    BOOST_LOG_TRIVIAL(debug) << "Navigation requested to: " << into_u8(evt.GetURL());
     if (evt.GetURL() == m_default_url) {
         m_reached_default_url = true;
         return;