diff --git a/.changes/dialog-default-path-windows-slash.md b/.changes/dialog-default-path-windows-slash.md
new file mode 100644
index 00000000..c7332b7a
--- /dev/null
+++ b/.changes/dialog-default-path-windows-slash.md
@@ -0,0 +1,5 @@
+---
+"dialog": patch
+---
+
+On Windows, fix `open` dialog `defaultPath`, when invoked from JS, not working if the path uses forward slash (`/`)
diff --git a/Cargo.lock b/Cargo.lock
index f31a46ec..084d891f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -230,7 +230,7 @@ checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
 
 [[package]]
 name = "api"
-version = "2.0.0-alpha.7"
+version = "2.0.0-alpha.8"
 dependencies = [
  "log",
  "serde",
@@ -5854,7 +5854,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-authenticator"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "authenticator",
  "base64 0.21.5",
@@ -5873,7 +5873,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-autostart"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "auto-launch",
  "log",
@@ -5885,7 +5885,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-barcode-scanner"
-version = "2.0.0-alpha.2"
+version = "2.0.0-alpha.3"
 dependencies = [
  "log",
  "serde",
@@ -5897,7 +5897,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-cli"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "clap",
  "log",
@@ -5909,7 +5909,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-clipboard-manager"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "arboard",
  "log",
@@ -5922,7 +5922,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-deep-link"
-version = "2.0.0-alpha.2"
+version = "2.0.0-alpha.3"
 dependencies = [
  "log",
  "serde",
@@ -5935,7 +5935,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-dialog"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "glib 0.16.9",
  "log",
@@ -5951,7 +5951,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-fs"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "anyhow",
  "glob",
@@ -5965,7 +5965,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-global-shortcut"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "global-hotkey",
  "log",
@@ -5977,7 +5977,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-http"
-version = "2.0.0-alpha.5"
+version = "2.0.0-alpha.6"
 dependencies = [
  "data-url",
  "glob",
@@ -5993,7 +5993,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-localhost"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "http",
  "log",
@@ -6006,7 +6006,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-log"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "android_logger",
  "byte-unit",
@@ -6025,7 +6025,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-notification"
-version = "2.0.0-alpha.5"
+version = "2.0.0-alpha.6"
 dependencies = [
  "log",
  "notify-rust",
@@ -6044,7 +6044,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-os"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "gethostname 0.4.3",
  "log",
@@ -6059,7 +6059,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-persisted-scope"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "aho-corasick",
  "bincode",
@@ -6073,7 +6073,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-positioner"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "log",
  "serde",
@@ -6085,14 +6085,14 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-process"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "tauri",
 ]
 
 [[package]]
 name = "tauri-plugin-shell"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "encoding_rs",
  "log",
@@ -6108,7 +6108,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-single-instance"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "log",
  "serde",
@@ -6121,7 +6121,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-sql"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "futures-core",
  "log",
@@ -6136,7 +6136,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-store"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "log",
  "serde",
@@ -6147,7 +6147,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-stronghold"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "hex",
  "iota-crypto 0.23.0",
@@ -6167,7 +6167,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-updater"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "base64 0.21.5",
  "dirs-next",
@@ -6193,7 +6193,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-upload"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "futures-util",
  "log",
@@ -6209,7 +6209,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-websocket"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "futures-util",
  "log",
@@ -6224,7 +6224,7 @@ dependencies = [
 
 [[package]]
 name = "tauri-plugin-window-state"
-version = "2.0.0-alpha.4"
+version = "2.0.0-alpha.5"
 dependencies = [
  "bincode",
  "bitflags 2.4.1",
diff --git a/plugins/dialog/src/commands.rs b/plugins/dialog/src/commands.rs
index 17c18ee7..a7de3818 100644
--- a/plugins/dialog/src/commands.rs
+++ b/plugins/dialog/src/commands.rs
@@ -71,6 +71,8 @@ fn set_default_path<R: Runtime>(
     mut dialog_builder: FileDialogBuilder<R>,
     default_path: PathBuf,
 ) -> FileDialogBuilder<R> {
+    // we need to adjust the separator on Windows: https://github.com/tauri-apps/tauri/issues/8074
+    let default_path: PathBuf = default_path.components().collect();
     if default_path.is_file() || !default_path.exists() {
         if let (Some(parent), Some(file_name)) = (default_path.parent(), default_path.file_name()) {
             if parent.components().count() > 0 {