diff --git a/src/main.cpp b/src/main.cpp
index 9a8650149..d39455bf1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,296 +1,297 @@
 /*
     main.cpp
 
     This file is part of Kleopatra, the KDE keymanager
     SPDX-FileCopyrightText: 2001, 2002, 2004, 2008 Klarälvdalens Datakonsult AB
 
     SPDX-FileCopyrightText: 2016 Bundesamt für Sicherheit in der Informationstechnik
     SPDX-FileContributor: Intevation GmbH
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include <config-kleopatra.h>
 
 #include "aboutdata.h"
 #include "kleopatraapplication.h"
 #include "mainwindow.h"
 
 #include "accessibility/accessiblewidgetfactory.h"
 
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
 #include <Kdelibs4ConfigMigrator>
 #endif
 
 #include <commands/reloadkeyscommand.h>
 #include <commands/selftestcommand.h>
 
 #include <Libkleo/GnuPG>
 #include <utils/archivedefinition.h>
 #include "utils/kuniqueservice.h"
 #include "utils/userinfo.h"
 
 #include <uiserver/uiserver.h>
 #include <uiserver/assuancommand.h>
 #include <uiserver/echocommand.h>
 #include <uiserver/decryptcommand.h>
 #include <uiserver/verifycommand.h>
 #include <uiserver/decryptverifyfilescommand.h>
 #include <uiserver/decryptfilescommand.h>
 #include <uiserver/verifyfilescommand.h>
 #include <uiserver/prepencryptcommand.h>
 #include <uiserver/prepsigncommand.h>
 #include <uiserver/encryptcommand.h>
 #include <uiserver/signcommand.h>
 #include <uiserver/signencryptfilescommand.h>
 #include <uiserver/selectcertificatecommand.h>
 #include <uiserver/importfilescommand.h>
 #include <uiserver/createchecksumscommand.h>
 #include <uiserver/verifychecksumscommand.h>
 
 #include <Libkleo/ChecksumDefinition>
 
 #include "kleopatra_debug.h"
 #include "kleopatra_options.h"
 
 #include <KLocalizedString>
 #include <KMessageBox>
 #include <KCrash>
 
 #include <QAccessible>
 #include <QTextDocument> // for Qt::escape
 #include <QMessageBox>
 #include <QTimer>
 #include <QTime>
 #include <QEventLoop>
 #include <QThreadPool>
 #include <QElapsedTimer>
 
 #include <gpgme++/global.h>
 #include <gpgme++/error.h>
 
 #include <memory>
 #include <iostream>
 #include <QCommandLineParser>
 
 QElapsedTimer startupTimer;
 
 static bool selfCheck()
 {
     Kleo::Commands::SelfTestCommand cmd(nullptr);
     cmd.setAutoDelete(false);
     cmd.setAutomaticMode(true);
     QEventLoop loop;
     QObject::connect(&cmd, &Kleo::Commands::SelfTestCommand::finished, &loop, &QEventLoop::quit);
     QTimer::singleShot(0, &cmd, &Kleo::Command::start);   // start() may Q_EMIT finished()...
     loop.exec();
     if (cmd.isCanceled()) {
         return false;
     } else {
         return true;
     }
 }
 
 static void fillKeyCache(Kleo::UiServer *server)
 {
     auto cmd = new Kleo::ReloadKeysCommand(nullptr);
     QObject::connect(cmd, SIGNAL(finished()), server, SLOT(enableCryptoCommands()));
     cmd->start();
 }
 
 int main(int argc, char **argv)
 {
     startupTimer.start();
 
+    // Qt::AA_EnableHighDpiScaling must be set before QGuiApplication is constructed.
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);
+    QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps, true);
+#endif
+
     KleopatraApplication app(argc, argv);
 
     STARTUP_TIMING << "Application created";
     /* Create the unique service ASAP to prevent double starts if
      * the application is started twice very quickly. */
     KUniqueService service;
     QObject::connect(&service, &KUniqueService::activateRequested,
                      &app, &KleopatraApplication::slotActivateRequested);
     QObject::connect(&app, &KleopatraApplication::setExitValue,
     &service, [&service](int i) {
         service.setExitValue(i);
     });
     STARTUP_TIMING << "Service created";
 
-#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
-    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling, true);
-    QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps, true);
-#endif
-
     KCrash::initialize();
     QAccessible::installFactory(Kleo::accessibleWidgetFactory);
     qCDebug(KLEOPATRA_LOG) << "Application created";
 
     app.setWindowIcon(QIcon::fromTheme(QStringLiteral("kleopatra"), app.windowIcon()));
 
     KLocalizedString::setApplicationDomain("kleopatra");
 
     // Initialize GpgME
     {
         const GpgME::Error gpgmeInitError = GpgME::initializeLibrary(0);
         if (gpgmeInitError) {
             KMessageBox::error(nullptr, xi18nc("@info",
                                         "<para>The version of the <application>GpgME</application> library you are running against "
                                         "is older than the one that the <application>GpgME++</application> library was built against.</para>"
                                         "<para><application>Kleopatra</application> will not function in this setting.</para>"
                                         "<para>Please ask your administrator for help in resolving this issue.</para>"),
                             i18nc("@title", "GpgME Too Old"));
             return EXIT_FAILURE;
         }
         STARTUP_TIMING << "GPGME Initialized";
     }
 
     AboutData aboutData;
     KAboutData::setApplicationData(aboutData);
     /* This is more expensive as it sounds as it might run a verification
      * on a signed Version file and initializes the whole GpgME::Engine. */
     STARTUP_TIMING << "Versions checked";
 
     if (Kleo::userIsElevated()) {
         /* This is a safeguard against bugreports that something fails because
          * of permission problems on windows.  Some users still have the Windows
          * Vista behavior of running things as Administrator.  This can break
          * GnuPG in horrible ways for example if a stale lockfile is left that
          * can't be removed without another elevation.
          *
          * Note: This is not the same as running as root on Linux. Elevated means
          * that you are temporarily running with the "normal" user environment but
          * with elevated permissions.
          * */
         if (KMessageBox::warningContinueCancel(nullptr, xi18nc("@info",
                                                "<para><application>Kleopatra</application> cannot be run as adminstrator without "
                                                "breaking file permissions in the GnuPG data folder.</para>"
                                                "<para>To manage keys for other users please manage them as a normal user and "
                                                "copy the <filename>AppData\\Roaming\\gnupg</filename> directory with proper permissions.</para>") +
                                                xi18n("<para>Are you sure that you want to continue?</para>"),
                                                i18nc("@title", "Running as Administrator")) != KMessageBox::Continue) {
             return EXIT_FAILURE;
         }
         qCWarning(KLEOPATRA_LOG) << "User is running with administrative permissions.";
     }
     // Delay init after KUniqueservice call as this might already
     // have terminated us and so we can avoid overhead (e.g. keycache
     // setup / systray icon).
     app.init();
     STARTUP_TIMING << "Application initialized";
 
     QCommandLineParser parser;
     aboutData.setupCommandLine(&parser);
     kleopatra_options(&parser);
 
     parser.process(QApplication::arguments());
     aboutData.processCommandLine(&parser);
 #if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     Kdelibs4ConfigMigrator migrate(QStringLiteral("kleopatra"));
     migrate.setConfigFiles(QStringList() << QStringLiteral("kleopatrarc")
                                          << QStringLiteral("libkleopatrarc"));
     migrate.setUiFiles(QStringList() << QStringLiteral("kleopatra.rc"));
     migrate.migrate();
 #endif
     {
         const unsigned int threads = QThreadPool::globalInstance()->maxThreadCount();
         QThreadPool::globalInstance()->setMaxThreadCount(qMax(2U, threads));
     }
 
     Kleo::ChecksumDefinition::setInstallPath(Kleo::gpg4winInstallPath());
     Kleo::ArchiveDefinition::setInstallPath(Kleo::gnupgInstallPath());
 
 #ifndef DISABLE_UISERVER
     int rc;
     Kleo::UiServer *server = nullptr;
     try {
         server = new Kleo::UiServer(parser.value(QStringLiteral("uiserver-socket")));
         STARTUP_TIMING << "UiServer created";
 
         QObject::connect(server, &Kleo::UiServer::startKeyManagerRequested, &app, &KleopatraApplication::openOrRaiseMainWindow);
 
         QObject::connect(server, &Kleo::UiServer::startConfigDialogRequested, &app, &KleopatraApplication::openOrRaiseConfigDialog);
 
 #define REGISTER( Command ) server->registerCommandFactory( std::shared_ptr<Kleo::AssuanCommandFactory>( new Kleo::GenericAssuanCommandFactory<Kleo::Command> ) )
         REGISTER(CreateChecksumsCommand);
         REGISTER(DecryptCommand);
         REGISTER(DecryptFilesCommand);
         REGISTER(DecryptVerifyFilesCommand);
         REGISTER(EchoCommand);
         REGISTER(EncryptCommand);
         REGISTER(EncryptFilesCommand);
         REGISTER(EncryptSignFilesCommand);
         REGISTER(ImportFilesCommand);
         REGISTER(PrepEncryptCommand);
         REGISTER(PrepSignCommand);
         REGISTER(SelectCertificateCommand);
         REGISTER(SignCommand);
         REGISTER(SignEncryptFilesCommand);
         REGISTER(SignFilesCommand);
         REGISTER(VerifyChecksumsCommand);
         REGISTER(VerifyCommand);
         REGISTER(VerifyFilesCommand);
 #undef REGISTER
 
         server->start();
         STARTUP_TIMING << "UiServer started";
     } catch (const std::exception &e) {
         qCDebug(KLEOPATRA_LOG) << "Failed to start UI Server: " << e.what();
 #ifdef Q_OS_WIN
         // We should probably change the UIServer to be only run on Windows at all because
         // only the Windows Explorer Plugin uses it. But the plan of GnuPG devs as of 2022 is to
         // change the Windows Explorer Plugin to use the command line and then remove the
         // UiServer for everyone.
         QMessageBox::information(nullptr, i18n("GPG UI Server Error"),
                                  i18nc("This error message is only shown on Windows when the socket to communicate with "
                                        "Windows Explorer could not be created. This often times means that the whole installation is "
                                        "buggy. e.g. GnuPG is not installed at all.",
                                        "<qt>The Kleopatra Windows Explorer Module could not be initialized.<br/>"
                                        "The error given was: <b>%1</b><br/>"
                                        "This likely means that there is a problem with your installation. Try reinstalling or "
                                        "contact your Administrator for support.<br/>"
                                        "You can try to continue to use Kleopatra but there might be other problems.</qt>",
                                        QString::fromUtf8(e.what()).toHtmlEscaped()));
 #endif
     }
 #endif // DISABLE_UISERVER
     const bool daemon = parser.isSet(QStringLiteral("daemon"));
     if (!daemon && app.isSessionRestored()) {
         app.restoreMainWindow();
     }
 
     if (!selfCheck()) {
         return EXIT_FAILURE;
     }
     STARTUP_TIMING << "SelfCheck completed";
 
     if (server) {
         fillKeyCache(server);
     }
 #ifndef QT_NO_SYSTEMTRAYICON
     app.startMonitoringSmartCard();
 #endif
     app.setIgnoreNewInstance(false);
 
     if (!daemon) {
         const QString err = app.newInstance(parser);
         if (!err.isEmpty()) {
             std::cerr << i18n("Invalid arguments: %1", err).toLocal8Bit().constData() << "\n";
             return EXIT_FAILURE;
         }
         STARTUP_TIMING << "new instance created";
     }
 
     rc = app.exec();
 
     app.setIgnoreNewInstance(true);
     QObject::disconnect(server, &Kleo::UiServer::startKeyManagerRequested, &app, &KleopatraApplication::openOrRaiseMainWindow);
     QObject::disconnect(server, &Kleo::UiServer::startConfigDialogRequested, &app, &KleopatraApplication::openOrRaiseConfigDialog);
 
     if (server) {
         server->stop();
         server->waitForStopped();
         delete server;
     }
 
     return rc;
 }