diff --git a/src/common/logging/vst3.cpp b/src/common/logging/vst3.cpp
index 2e4b5342..a8c197a7 100644
--- a/src/common/logging/vst3.cpp
+++ b/src/common/logging/vst3.cpp
@@ -79,7 +79,8 @@ bool Vst3Logger::log_request(bool is_host_vst,
                              const Vst3PluginProxy::Construct& request) {
     return log_request_base(is_host_vst, [&](auto& message) {
         message << "IPluginFactory::createInstance(cid = "
-                << format_uid(Steinberg::FUID::fromTUID(request.cid.data()))
+                << format_uid(Steinberg::FUID::fromTUID(
+                       request.cid.native_uid().data()))
                 << ", _iid = ";
         switch (request.requested_interface) {
             case Vst3PluginProxy::Construct::Interface::IComponent:
diff --git a/src/common/serialization/vst3/plugin-factory.cpp b/src/common/serialization/vst3/plugin-factory.cpp
index 64307b42..c9413725 100644
--- a/src/common/serialization/vst3/plugin-factory.cpp
+++ b/src/common/serialization/vst3/plugin-factory.cpp
@@ -38,6 +38,13 @@ YaPluginFactory::ConstructArgs::ConstructArgs(
         Steinberg::PClassInfo info;
         if (factory->getClassInfo(i, &info) == Steinberg::kResultOk) {
             class_infos_1[i] = info;
+
+            // NOTE: We'll need to do a byte order conversion to the reported
+            //       class IDs match up with native and 'real' Windows VST3
+            //       plugins. See `WineUID` for more information.
+            ArrayUID native_uid = WineUID(info.cid).get_native_uid();
+            std::copy(native_uid.begin(), native_uid.end(),
+                      class_infos_1[i]->cid);
         }
     }
 
@@ -53,6 +60,13 @@ YaPluginFactory::ConstructArgs::ConstructArgs(
         Steinberg::PClassInfo2 info;
         if (factory2->getClassInfo2(i, &info) == Steinberg::kResultOk) {
             class_infos_2[i] = info;
+
+            // NOTE: We'll need to do a byte order conversion to the reported
+            //       class IDs match up with native and 'real' Windows VST3
+            //       plugins. See `WineUID` for more information.
+            ArrayUID native_uid = WineUID(info.cid).get_native_uid();
+            std::copy(native_uid.begin(), native_uid.end(),
+                      class_infos_1[i]->cid);
         }
     }
 
@@ -68,6 +82,13 @@ YaPluginFactory::ConstructArgs::ConstructArgs(
         Steinberg::PClassInfoW info;
         if (factory3->getClassInfoUnicode(i, &info) == Steinberg::kResultOk) {
             class_infos_unicode[i] = info;
+
+            // NOTE: We'll need to do a byte order conversion to the reported
+            //       class IDs match up with native and 'real' Windows VST3
+            //       plugins. See `WineUID` for more information.
+            ArrayUID native_uid = WineUID(info.cid).get_native_uid();
+            std::copy(native_uid.begin(), native_uid.end(),
+                      class_infos_1[i]->cid);
         }
     }
 }
diff --git a/src/common/serialization/vst3/plugin-factory.h b/src/common/serialization/vst3/plugin-factory.h
index baa0c62a..f472f80c 100644
--- a/src/common/serialization/vst3/plugin-factory.h
+++ b/src/common/serialization/vst3/plugin-factory.h
@@ -29,6 +29,8 @@
 /**
  * Wraps around `IPluginFactory{1,2,3}` for serialization purposes. See
  * `docs/vst3.md` for more information on how this works.
+ *
+ * TODO: Redo this in the new 'Vst3PluginFactoryProxy' style
  */
 class YaPluginFactory : public Steinberg::IPluginFactory3 {
    public:
@@ -70,6 +72,10 @@ class YaPluginFactory : public Steinberg::IPluginFactory3 {
          * info versions if the plugin can provide them since we don't know
          * which version of the interface the host will use. Will be
          * `std::nullopt` if the plugin doesn't return a class info.
+         *
+         * NOTE: We'll have already converted all returned class IDs to native
+         *       class IDs using `WienUID::to_native_uid()` for cross-platform
+         *       compatibility. This applies to all `class_info_*` fields here.
          */
         std::vector<std::optional<Steinberg::PClassInfo>> class_infos_1;
 
diff --git a/src/common/serialization/vst3/plugin-proxy.h b/src/common/serialization/vst3/plugin-proxy.h
index e3b121aa..06eb6adb 100644
--- a/src/common/serialization/vst3/plugin-proxy.h
+++ b/src/common/serialization/vst3/plugin-proxy.h
@@ -173,7 +173,7 @@ class Vst3PluginProxy : public YaAudioPresentationLatency,
     struct Construct {
         using Response = std::variant<ConstructArgs, UniversalTResult>;
 
-        ArrayUID cid;
+        NativeUID cid;
 
         /**
          * The interface the host was trying to instantiate an object for.
@@ -189,7 +189,7 @@ class Vst3PluginProxy : public YaAudioPresentationLatency,
 
         template <typename S>
         void serialize(S& s) {
-            s.container1b(cid);
+            s.object(cid);
             s.value4b(requested_interface);
         }
     };
diff --git a/src/plugin/bridges/vst3-impls/plugin-factory.cpp b/src/plugin/bridges/vst3-impls/plugin-factory.cpp
index 7e92d942..ec411279 100644
--- a/src/plugin/bridges/vst3-impls/plugin-factory.cpp
+++ b/src/plugin/bridges/vst3-impls/plugin-factory.cpp
@@ -35,8 +35,8 @@ YaPluginFactoryImpl::createInstance(Steinberg::FIDString cid,
         return Steinberg::kInvalidArgument;
     }
 
-    ArrayUID cid_array;
-    std::copy(cid, cid + std::extent_v<Steinberg::TUID>, cid_array.begin());
+    Steinberg::TUID cid_array;
+    std::copy(cid, cid + std::extent_v<Steinberg::TUID>, cid_array);
 
     // FIXME: `_iid` in Bitwig Studio 3.3.1 is not null terminated, and the
     //        comparison below will thus fail since the strings have different
diff --git a/src/wine-host/bridges/vst3.cpp b/src/wine-host/bridges/vst3.cpp
index 932e95ef..e0465a0a 100644
--- a/src/wine-host/bridges/vst3.cpp
+++ b/src/wine-host/bridges/vst3.cpp
@@ -120,7 +120,9 @@ void Vst3Bridge::run() {
             [&](const Vst3PluginProxy::Construct& request)
                 -> Vst3PluginProxy::Construct::Response {
                 Steinberg::TUID cid;
-                std::copy(request.cid.begin(), request.cid.end(), cid);
+
+                ArrayUID wine_cid = request.cid.get_wine_uid();
+                std::copy(wine_cid.begin(), wine_cid.end(), cid);
 
                 // Even though we're requesting a specific interface (to mimic
                 // what the host is doing), we're immediately upcasting it to an