diff --git a/.changes/updater-nsis-basicui.md b/.changes/updater-nsis-basicui.md
new file mode 100644
index 00000000..bbb92f91
--- /dev/null
+++ b/.changes/updater-nsis-basicui.md
@@ -0,0 +1,6 @@
+---
+"updater": "patch"
+"updater-js": "patch"
+---
+
+Fix NSIS updater failing to launch when using `basicUi` mode.
diff --git a/plugins/updater/src/updater.rs b/plugins/updater/src/updater.rs
index 1340c245..75cd38a8 100644
--- a/plugins/updater/src/updater.rs
+++ b/plugins/updater/src/updater.rs
@@ -496,31 +496,32 @@ impl Update {
             // If it's an `exe` we expect an installer not a runtime.
             if found_path.extension() == Some(OsStr::new("exe")) {
                 // we need to wrap the installer path in quotes for Start-Process
-                let mut installer_arg = std::ffi::OsString::new();
-                installer_arg.push("\"");
-                installer_arg.push(&found_path);
-                installer_arg.push("\"");
+                let mut installer_path = std::ffi::OsString::new();
+                installer_path.push("\"");
+                installer_path.push(&found_path);
+                installer_path.push("\"");
+
+                let installer_args = [
+                    self.config.windows.install_mode.nsis_args(),
+                    self.installer_args
+                        .iter()
+                        .map(AsRef::as_ref)
+                        .collect::<Vec<_>>()
+                        .as_slice(),
+                ]
+                .concat();
 
                 // Run the installer
-                Command::new(powershell_path)
-                    .args(["-NoProfile", "-WindowStyle", "Hidden"])
+                let mut cmd = Command::new(powershell_path);
+
+                cmd.args(["-NoProfile", "-WindowStyle", "Hidden"])
                     .args(["Start-Process"])
-                    .arg(installer_arg)
-                    .arg("-ArgumentList")
-                    .arg(
-                        [
-                            self.config.windows.install_mode.nsis_args(),
-                            self.installer_args
-                                .iter()
-                                .map(AsRef::as_ref)
-                                .collect::<Vec<_>>()
-                                .as_slice(),
-                        ]
-                        .concat()
-                        .join(", "),
-                    )
-                    .spawn()
-                    .expect("installer failed to start");
+                    .arg(installer_path);
+
+                if !installer_args.is_empty() {
+                    cmd.arg("-ArgumentList").arg(installer_args.join(", "));
+                }
+                cmd.spawn().expect("installer failed to start");
 
                 std::process::exit(0);
             } else if found_path.extension() == Some(OsStr::new("msi")) {
@@ -530,19 +531,20 @@ impl Update {
                 current_exe_arg.push(current_exe()?);
                 current_exe_arg.push("\"");
 
-                let mut msi_path_arg = std::ffi::OsString::new();
-                msi_path_arg.push("\"\"\"");
-                msi_path_arg.push(&found_path);
-                msi_path_arg.push("\"\"\"");
-
-                let msiexec_args = self
-                    .config
-                    .windows
-                    .install_mode
-                    .msiexec_args()
-                    .iter()
-                    .map(|p| p.to_string())
-                    .collect::<Vec<String>>();
+                let mut msi_path = std::ffi::OsString::new();
+                msi_path.push("\"\"\"");
+                msi_path.push(&found_path);
+                msi_path.push("\"\"\"");
+
+                let installer_args = [
+                    self.config.windows.install_mode.msiexec_args(),
+                    self.installer_args
+                        .iter()
+                        .map(AsRef::as_ref)
+                        .collect::<Vec<_>>()
+                        .as_slice(),
+                ]
+                .concat();
 
                 // run the installer and relaunch the application
                 let powershell_install_res = Command::new(powershell_path)
@@ -551,12 +553,12 @@ impl Update {
                         "Start-Process",
                         "-Wait",
                         "-FilePath",
-                        "$env:SYSTEMROOT\\System32\\msiexec.exe",
+                        "$Env:SYSTEMROOT\\System32\\msiexec.exe",
                         "-ArgumentList",
                     ])
                     .arg("/i,")
-                    .arg(&msi_path_arg)
-                    .arg(format!(", {}, /promptrestart;", msiexec_args.join(", ")))
+                    .arg(&msi_path)
+                    .arg(format!(", {}, /promptrestart;", installer_args.join(", ")))
                     .arg("Start-Process")
                     .arg(current_exe_arg)
                     .spawn();
@@ -569,8 +571,8 @@ impl Update {
                     );
                     let _ = Command::new(msiexec_path)
                         .arg("/i")
-                        .arg(msi_path_arg)
-                        .args(msiexec_args)
+                        .arg(msi_path)
+                        .args(installer_args)
                         .arg("/promptrestart")
                         .spawn();
                 }