diff --git a/src/qt/qt_updatecheckdialog.cpp b/src/qt/qt_updatecheckdialog.cpp
index 308f73d24..017d93822 100644
--- a/src/qt/qt_updatecheckdialog.cpp
+++ b/src/qt/qt_updatecheckdialog.cpp
@@ -31,7 +31,6 @@ UpdateCheckDialog(const UpdateCheck::UpdateChannel channel, QWidget *parent) : Q
 {
     ui->setupUi(this);
     ui->statusLabel->setHidden(true);
-    this->setFixedSize(400, 130);
     updateChannel = channel;
     currentVersion = UpdateCheck::getCurrentVersion(updateChannel);
     connect(updateCheck, &UpdateCheck::updateCheckError, [=](const QString &errorMsg) {
diff --git a/src/qt/qt_updatecheckdialog.ui b/src/qt/qt_updatecheckdialog.ui
index 16b0564bc..3fd2942fd 100644
--- a/src/qt/qt_updatecheckdialog.ui
+++ b/src/qt/qt_updatecheckdialog.ui
@@ -10,6 +10,18 @@
     <height>130</height>
    </rect>
   </property>
+  <property name="minimumSize">
+   <size>
+    <width>400</width>
+    <height>130</height>
+   </size>
+  </property>
+  <property name="maximumSize">
+   <size>
+    <width>400</width>
+    <height>130</height>
+   </size>
+  </property>
   <property name="sizePolicy">
    <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
     <horstretch>0</horstretch>
diff --git a/src/qt/qt_vmmanager_addmachine.cpp b/src/qt/qt_vmmanager_addmachine.cpp
index 11da2b49d..08c7896cf 100644
--- a/src/qt/qt_vmmanager_addmachine.cpp
+++ b/src/qt/qt_vmmanager_addmachine.cpp
@@ -58,7 +58,9 @@ VMManagerAddMachine(QWidget *parent) : QWizard(parent)
 #endif
 
     // Wizard wants to resize based on image. This keeps the size
-    setFixedSize(QSize(550, size().height()));
+    setMinimumSize(QSize(550, size().height()));
+    setMaximumSize(QSize(550, size().height()));
+    setWindowFlag(Qt::MSWindowsFixedSizeDialogHint, true);
     setOption(HaveHelpButton, false);
     // setPixmap(LogoPixmap, QPixmap(":/settings/qt/icons/86Box-gray.ico"));
 
diff --git a/src/qt/qt_vmmanager_main.cpp b/src/qt/qt_vmmanager_main.cpp
index d2ce2f025..50b6db0e3 100644
--- a/src/qt/qt_vmmanager_main.cpp
+++ b/src/qt/qt_vmmanager_main.cpp
@@ -238,7 +238,8 @@ illegal_chars:
                     progDialog->setMaximum(0);
                     progDialog->setMinimum(0);
                     progDialog->setWindowFlags(progDialog->windowFlags() & ~Qt::WindowCloseButtonHint);
-                    progDialog->setFixedSize(progDialog->sizeHint());
+                    progDialog->setMinimumSize(progDialog->sizeHint());
+                    progDialog->setMaximumSize(progDialog->sizeHint());
                     progDialog->setMinimumDuration(0);
                     progDialog->setCancelButton(nullptr);
                     progDialog->setAutoClose(false);
diff --git a/src/qt/qt_vmmanager_system.cpp b/src/qt/qt_vmmanager_system.cpp
index 2168f2e4d..59680528c 100644
--- a/src/qt/qt_vmmanager_system.cpp
+++ b/src/qt/qt_vmmanager_system.cpp
@@ -132,7 +132,8 @@ VMManagerSystem::scanForConfigs(QWidget* parent, const QString &searchPath)
     progDialog.setMinimum(0);
     progDialog.setMaximum(0);
     progDialog.setWindowFlags(progDialog.windowFlags() & ~Qt::WindowCloseButtonHint);
-    progDialog.setFixedSize(progDialog.sizeHint());
+    progDialog.setMinimumSize(progDialog.sizeHint());
+    progDialog.setMaximumSize(progDialog.sizeHint());
     QElapsedTimer scanTimer;
     scanTimer.start();
     QVector<VMManagerSystem *> system_configs;