diff --git a/widgets/misc/internalerror.cpp b/widgets/misc/internalerror.cpp
index 445d6ff..a261a8b 100644
--- a/widgets/misc/internalerror.cpp
+++ b/widgets/misc/internalerror.cpp
@@ -35,7 +35,7 @@ bool InternalError::isRelevant(const SyncthingConnection &connection, SyncthingE
     }
 
     // consider process/launcher or systemd unit status
-    const auto remoteHostClosed(networkError == QNetworkReply::RemoteHostClosedError);
+    const auto remoteHostClosed(networkError == QNetworkReply::RemoteHostClosedError || networkError == QNetworkReply::ProxyConnectionClosedError);
     // ignore "remote host closed" error if we've just stopped Syncthing ourselves
     const auto *launcher(SyncthingLauncher::mainInstance());
     if (settings.launcher.considerForReconnect && remoteHostClosed && launcher && launcher->isManuallyStopped()) {
@@ -49,23 +49,32 @@ bool InternalError::isRelevant(const SyncthingConnection &connection, SyncthingE
 #endif
 
     // ignore inavailability after start or standby-wakeup
-    if (settings.ignoreInavailabilityAfterStart && networkError == QNetworkReply::ConnectionRefusedError) {
-        if ((launcher && launcher->isRunning())
+    if (settings.ignoreInavailabilityAfterStart) {
+        switch (networkError) {
+        case QNetworkReply::ConnectionRefusedError:
+        case QNetworkReply::HostNotFoundError:
+        case QNetworkReply::TemporaryNetworkFailureError:
+        case QNetworkReply::NetworkSessionFailedError:
+        case QNetworkReply::ProxyConnectionRefusedError:
+        case QNetworkReply::ProxyNotFoundError:
+            if ((launcher && launcher->isRunning())
 #ifdef LIB_SYNCTHING_CONNECTOR_SUPPORT_SYSTEMD
-            && ((service && service->isSystemdAvailable()
-                    && !service->isActiveWithoutSleepFor(launcher->activeSince(), settings.ignoreInavailabilityAfterStart))
-                || !launcher->isActiveFor(settings.ignoreInavailabilityAfterStart))
+                && ((service && service->isSystemdAvailable()
+                        && !service->isActiveWithoutSleepFor(launcher->activeSince(), settings.ignoreInavailabilityAfterStart))
+                    || !launcher->isActiveFor(settings.ignoreInavailabilityAfterStart))
 #else
-            && !launcher->isActiveFor(settings.ignoreInavailabilityAfterStart)
+                && !launcher->isActiveFor(settings.ignoreInavailabilityAfterStart)
 #endif
-        ) {
-            return false;
-        }
+            ) {
+                return false;
+            }
 #ifdef LIB_SYNCTHING_CONNECTOR_SUPPORT_SYSTEMD
-        if (service && !service->isActiveWithoutSleepFor(settings.ignoreInavailabilityAfterStart)) {
-            return false;
-        }
+            if (service && !service->isActiveWithoutSleepFor(settings.ignoreInavailabilityAfterStart)) {
+                return false;
+            }
 #endif
+            break;
+        }
     }
 
     return true;