diff --git a/dom/media/eme/mediafoundation/WMFCDMImpl.cpp b/dom/media/eme/mediafoundation/WMFCDMImpl.cpp
index 9491f4c9ec5..7cc9fe4efd8 100644
--- a/dom/media/eme/mediafoundation/WMFCDMImpl.cpp
+++ b/dom/media/eme/mediafoundation/WMFCDMImpl.cpp
@@ -20,6 +20,7 @@ RefPtr<WMFCDMImpl::InitPromise> WMFCDMImpl::Init(
     const WMFCDMImpl::InitParams& aParams) {
   if (!mCDM) {
     mCDM = MakeRefPtr<MFCDMChild>(mKeySystem);
+    mCDM->EnsureRemote();
   }
   RefPtr<WMFCDMImpl> self = this;
   mCDM->Init(aParams.mOrigin, aParams.mInitDataTypes,
@@ -58,6 +59,7 @@ WMFCDMCapabilites::GetCapabilities(
   nsTArray<RefPtr<CapabilitiesPromise>> promises;
   for (const auto& request : aRequests) {
     RefPtr<MFCDMChild> cdm = new MFCDMChild(request.mKeySystem);
+    cdm->EnsureRemote();
     promises.AppendElement(cdm->GetCapabilities(MFCDMCapabilitiesRequest{
         nsString{request.mKeySystem},
         request.mDecryption == KeySystemConfig::DecryptionInfo::Hardware,
diff --git a/dom/media/ipc/MFCDMChild.cpp b/dom/media/ipc/MFCDMChild.cpp
index 9df86b82f47..4cbc7403970 100644
--- a/dom/media/ipc/MFCDMChild.cpp
+++ b/dom/media/ipc/MFCDMChild.cpp
@@ -73,19 +73,25 @@ MFCDMChild::MFCDMChild(const nsAString& aKeySystem)
     : mKeySystem(aKeySystem),
       mManagerThread(RemoteDecoderManagerChild::GetManagerThread()),
       mState(NS_ERROR_NOT_INITIALIZED),
-      mShutdown(false) {
-  mRemotePromise = EnsureRemote();
-}
+      mShutdown(false) {}
 
 MFCDMChild::~MFCDMChild() {}
 
-RefPtr<MFCDMChild::RemotePromise> MFCDMChild::EnsureRemote() {
+void MFCDMChild::EnsureRemote() {
+  if (mRemotePromise) {
+    LOG("already created remote promise");
+    return;
+  }
+
   if (!mManagerThread) {
     LOG("no manager thread");
     mState = NS_ERROR_NOT_AVAILABLE;
-    return RemotePromise::CreateAndReject(mState, __func__);
+    mRemotePromise = RemotePromise::CreateAndReject(mState, __func__);
+    return;
   }
 
+  mRemotePromise = mRemotePromiseHolder.Ensure(__func__);
+
   RefPtr<MFCDMChild> self = this;
   RemoteDecoderManagerChild::LaunchUtilityProcessIfNeeded(
       RemoteDecodeIn::UtilityProcess_MFMediaEngineCDM)
@@ -115,7 +121,6 @@ RefPtr<MFCDMChild::RemotePromise> MFCDMChild::EnsureRemote() {
             mRemotePromiseHolder.RejectIfExists(rv, __func__);
           })
       ->Track(mRemoteRequest);
-  return mRemotePromiseHolder.Ensure(__func__);
 }
 
 void MFCDMChild::Shutdown() {
diff --git a/dom/media/ipc/MFCDMChild.h b/dom/media/ipc/MFCDMChild.h
index ec766cab248..2f36b9df0d1 100644
--- a/dom/media/ipc/MFCDMChild.h
+++ b/dom/media/ipc/MFCDMChild.h
@@ -85,6 +85,8 @@ class MFCDMChild final : public PMFCDMChild {
       mState = NS_ERROR_NOT_AVAILABLE;
     }
   }
+
+  void EnsureRemote();
   void Shutdown();
 
   nsISerialEventTarget* ManagerThread() { return mManagerThread; }
@@ -95,9 +97,6 @@ class MFCDMChild final : public PMFCDMChild {
  private:
   ~MFCDMChild();
 
-  using RemotePromise = GenericNonExclusivePromise;
-  RefPtr<RemotePromise> EnsureRemote();
-
   void AssertSendable();
 
   const nsString mKeySystem;
@@ -105,6 +104,7 @@ class MFCDMChild final : public PMFCDMChild {
   const RefPtr<nsISerialEventTarget> mManagerThread;
   RefPtr<MFCDMChild> mIPDLSelfRef;
 
+  using RemotePromise = GenericNonExclusivePromise;
   RefPtr<RemotePromise> mRemotePromise;
   MozPromiseHolder<RemotePromise> mRemotePromiseHolder;
   MozPromiseRequestHolder<RemotePromise> mRemoteRequest;