diff --git a/lib/types/crypto-types.js b/lib/types/crypto-types.js
--- a/lib/types/crypto-types.js
+++ b/lib/types/crypto-types.js
@@ -151,6 +151,7 @@
     contentIdentityKeys: OLMIdentityKeys,
     initialEncryptedData: EncryptedData,
     sessionVersion: number,
+    overwrite: boolean,
   ) => Promise<string>,
   +contentOutboundSessionCreator: (
     contentIdentityKeys: OLMIdentityKeys,
diff --git a/native/cpp/CommonCpp/CryptoTools/CryptoModule.h b/native/cpp/CommonCpp/CryptoTools/CryptoModule.h
--- a/native/cpp/CommonCpp/CryptoTools/CryptoModule.h
+++ b/native/cpp/CommonCpp/CryptoTools/CryptoModule.h
@@ -59,7 +59,7 @@
       const OlmBuffer &encryptedMessage,
       const OlmBuffer &idKeys,
       int sessionVersion,
-      const bool overwrite = true);
+      const bool overwrite);
   int initializeOutboundForSendingSession(
       const std::string &targetDeviceId,
       const OlmBuffer &idKeys,
diff --git a/native/cpp/CommonCpp/CryptoTools/CryptoModule.cpp b/native/cpp/CommonCpp/CryptoTools/CryptoModule.cpp
--- a/native/cpp/CommonCpp/CryptoTools/CryptoModule.cpp
+++ b/native/cpp/CommonCpp/CryptoTools/CryptoModule.cpp
@@ -266,19 +266,13 @@
   if (this->hasSessionFor(targetDeviceId)) {
     std::shared_ptr<Session> existingSession =
         getSessionByDeviceId(targetDeviceId);
-    if (existingSession->version > sessionVersion) {
+    if (!overwrite && existingSession->version > sessionVersion) {
       throw std::runtime_error{"OLM_SESSION_ALREADY_CREATED"};
-    } else if (existingSession->version == sessionVersion) {
+    } else if (!overwrite && existingSession->version == sessionVersion) {
       throw std::runtime_error{"OLM_SESSION_CREATION_RACE_CONDITION"};
     }
 
-    if (overwrite) {
-      this->sessions.erase(this->sessions.find(targetDeviceId));
-    } else {
-      throw std::runtime_error{
-          "error initializeInboundForReceivingSession => session already "
-          "initialized"};
-    }
+    this->sessions.erase(this->sessions.find(targetDeviceId));
   }
   std::unique_ptr<Session> newSession = Session::createSessionAsResponder(
       this->getOlmAccount(),
diff --git a/native/cpp/CommonCpp/NativeModules/CommCoreModule.h b/native/cpp/CommonCpp/NativeModules/CommCoreModule.h
--- a/native/cpp/CommonCpp/NativeModules/CommCoreModule.h
+++ b/native/cpp/CommonCpp/NativeModules/CommCoreModule.h
@@ -133,7 +133,8 @@
       jsi::String identityKeys,
       jsi::Object encryptedDataJSI,
       jsi::String deviceID,
-      double sessionVersion) override;
+      double sessionVersion,
+      bool overwrite) override;
   virtual jsi::Value
   encrypt(jsi::Runtime &rt, jsi::String message, jsi::String deviceID) override;
   virtual jsi::Value decrypt(
diff --git a/native/cpp/CommonCpp/NativeModules/CommCoreModule.cpp b/native/cpp/CommonCpp/NativeModules/CommCoreModule.cpp
--- a/native/cpp/CommonCpp/NativeModules/CommCoreModule.cpp
+++ b/native/cpp/CommonCpp/NativeModules/CommCoreModule.cpp
@@ -1218,7 +1218,8 @@
     jsi::String identityKeys,
     jsi::Object encryptedDataJSI,
     jsi::String deviceID,
-    double sessionVersion) {
+    double sessionVersion,
+    bool overwrite) {
   auto identityKeysCpp{identityKeys.utf8(rt)};
   size_t messageType =
       std::lround(encryptedDataJSI.getProperty(rt, "messageType").asNumber());
@@ -1237,7 +1238,8 @@
                     encryptedMessageCpp.begin(), encryptedMessageCpp.end()),
                 std::vector<uint8_t>(
                     identityKeysCpp.begin(), identityKeysCpp.end()),
-                static_cast<int>(sessionVersion));
+                static_cast<int>(sessionVersion),
+                overwrite);
             crypto::EncryptedData encryptedData{
                 std::vector<uint8_t>(
                     encryptedMessageCpp.begin(), encryptedMessageCpp.end()),
diff --git a/native/cpp/CommonCpp/_generated/commJSI-generated.cpp b/native/cpp/CommonCpp/_generated/commJSI-generated.cpp
--- a/native/cpp/CommonCpp/_generated/commJSI-generated.cpp
+++ b/native/cpp/CommonCpp/_generated/commJSI-generated.cpp
@@ -109,7 +109,7 @@
   return static_cast<CommCoreModuleSchemaCxxSpecJSI *>(&turboModule)->initializeContentOutboundSession(rt, args[0].asString(rt), args[1].asString(rt), args[2].asString(rt), args[3].asString(rt), args[4].asString(rt));
 }
 static jsi::Value __hostFunction_CommCoreModuleSchemaCxxSpecJSI_initializeContentInboundSession(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
-  return static_cast<CommCoreModuleSchemaCxxSpecJSI *>(&turboModule)->initializeContentInboundSession(rt, args[0].asString(rt), args[1].asObject(rt), args[2].asString(rt), args[3].asNumber());
+  return static_cast<CommCoreModuleSchemaCxxSpecJSI *>(&turboModule)->initializeContentInboundSession(rt, args[0].asString(rt), args[1].asObject(rt), args[2].asString(rt), args[3].asNumber(), args[4].asBool());
 }
 static jsi::Value __hostFunction_CommCoreModuleSchemaCxxSpecJSI_encrypt(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
   return static_cast<CommCoreModuleSchemaCxxSpecJSI *>(&turboModule)->encrypt(rt, args[0].asString(rt), args[1].asString(rt));
@@ -221,7 +221,7 @@
   methodMap_["removeKeyserverDataFromNotifStorage"] = MethodMetadata {1, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_removeKeyserverDataFromNotifStorage};
   methodMap_["getKeyserverDataFromNotifStorage"] = MethodMetadata {1, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_getKeyserverDataFromNotifStorage};
   methodMap_["initializeContentOutboundSession"] = MethodMetadata {5, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_initializeContentOutboundSession};
-  methodMap_["initializeContentInboundSession"] = MethodMetadata {4, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_initializeContentInboundSession};
+  methodMap_["initializeContentInboundSession"] = MethodMetadata {5, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_initializeContentInboundSession};
   methodMap_["encrypt"] = MethodMetadata {2, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_encrypt};
   methodMap_["decrypt"] = MethodMetadata {2, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_decrypt};
   methodMap_["signMessage"] = MethodMetadata {1, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_signMessage};
diff --git a/native/cpp/CommonCpp/_generated/commJSI.h b/native/cpp/CommonCpp/_generated/commJSI.h
--- a/native/cpp/CommonCpp/_generated/commJSI.h
+++ b/native/cpp/CommonCpp/_generated/commJSI.h
@@ -51,7 +51,7 @@
   virtual jsi::Value removeKeyserverDataFromNotifStorage(jsi::Runtime &rt, jsi::Array keyserverIDsToDelete) = 0;
   virtual jsi::Value getKeyserverDataFromNotifStorage(jsi::Runtime &rt, jsi::Array keyserverIDs) = 0;
   virtual jsi::Value initializeContentOutboundSession(jsi::Runtime &rt, jsi::String identityKeys, jsi::String prekey, jsi::String prekeySignature, jsi::String oneTimeKey, jsi::String deviceID) = 0;
-  virtual jsi::Value initializeContentInboundSession(jsi::Runtime &rt, jsi::String identityKeys, jsi::Object encryptedContent, jsi::String deviceID, double sessionVersion) = 0;
+  virtual jsi::Value initializeContentInboundSession(jsi::Runtime &rt, jsi::String identityKeys, jsi::Object encryptedContent, jsi::String deviceID, double sessionVersion, bool overwrite) = 0;
   virtual jsi::Value encrypt(jsi::Runtime &rt, jsi::String message, jsi::String deviceID) = 0;
   virtual jsi::Value decrypt(jsi::Runtime &rt, jsi::Object encryptedData, jsi::String deviceID) = 0;
   virtual jsi::Value signMessage(jsi::Runtime &rt, jsi::String message) = 0;
@@ -345,13 +345,13 @@
       return bridging::callFromJs<jsi::Value>(
           rt, &T::initializeContentOutboundSession, jsInvoker_, instance_, std::move(identityKeys), std::move(prekey), std::move(prekeySignature), std::move(oneTimeKey), std::move(deviceID));
     }
-    jsi::Value initializeContentInboundSession(jsi::Runtime &rt, jsi::String identityKeys, jsi::Object encryptedContent, jsi::String deviceID, double sessionVersion) override {
+    jsi::Value initializeContentInboundSession(jsi::Runtime &rt, jsi::String identityKeys, jsi::Object encryptedContent, jsi::String deviceID, double sessionVersion, bool overwrite) override {
       static_assert(
-          bridging::getParameterCount(&T::initializeContentInboundSession) == 5,
-          "Expected initializeContentInboundSession(...) to have 5 parameters");
+          bridging::getParameterCount(&T::initializeContentInboundSession) == 6,
+          "Expected initializeContentInboundSession(...) to have 6 parameters");
 
       return bridging::callFromJs<jsi::Value>(
-          rt, &T::initializeContentInboundSession, jsInvoker_, instance_, std::move(identityKeys), std::move(encryptedContent), std::move(deviceID), std::move(sessionVersion));
+          rt, &T::initializeContentInboundSession, jsInvoker_, instance_, std::move(identityKeys), std::move(encryptedContent), std::move(deviceID), std::move(sessionVersion), std::move(overwrite));
     }
     jsi::Value encrypt(jsi::Runtime &rt, jsi::String message, jsi::String deviceID) override {
       static_assert(
diff --git a/native/crypto/olm-api.js b/native/crypto/olm-api.js
--- a/native/crypto/olm-api.js
+++ b/native/crypto/olm-api.js
@@ -24,6 +24,7 @@
     contentIdentityKeys: OLMIdentityKeys,
     initialEncryptedData: EncryptedData,
     sessionVersion: number,
+    overwrite: boolean,
   ): Promise<string> {
     const identityKeys = JSON.stringify({
       curve25519: contentIdentityKeys.curve25519,
@@ -34,6 +35,7 @@
       initialEncryptedData,
       contentIdentityKeys.ed25519,
       sessionVersion,
+      overwrite,
     );
   },
   async contentOutboundSessionCreator(
diff --git a/native/schema/CommCoreModuleSchema.js b/native/schema/CommCoreModuleSchema.js
--- a/native/schema/CommCoreModuleSchema.js
+++ b/native/schema/CommCoreModuleSchema.js
@@ -117,6 +117,7 @@
     encryptedContent: Object,
     deviceID: string,
     sessionVersion: number,
+    overwrite: boolean,
   ) => Promise<string>;
   +encrypt: (message: string, deviceID: string) => Promise<EncryptedData>;
   +decrypt: (encryptedData: Object, deviceID: string) => Promise<string>;
@@ -163,6 +164,7 @@
     encryptedContent: EncryptedData,
     deviceID: string,
     sessionVersion: number,
+    overwrite: boolean,
   ) => Promise<string>;
 }
 
diff --git a/web/shared-worker/worker/worker-crypto.js b/web/shared-worker/worker/worker-crypto.js
--- a/web/shared-worker/worker/worker-crypto.js
+++ b/web/shared-worker/worker/worker-crypto.js
@@ -417,6 +417,7 @@
     contentIdentityKeys: OLMIdentityKeys,
     initialEncryptedData: EncryptedData,
     sessionVersion: number,
+    overwrite: boolean,
   ): Promise<string> {
     if (!cryptoStore) {
       throw new Error('Crypto account not initialized');
@@ -424,10 +425,12 @@
     const { contentAccount, contentSessions } = cryptoStore;
 
     const existingSession = contentSessions[contentIdentityKeys.ed25519];
-    if (existingSession && existingSession.version > sessionVersion) {
-      throw new Error('OLM_SESSION_ALREADY_CREATED');
-    } else if (existingSession && existingSession.version === sessionVersion) {
-      throw new Error('OLM_SESSION_CREATION_RACE_CONDITION');
+    if (existingSession) {
+      if (!overwrite && existingSession.version > sessionVersion) {
+        throw new Error('OLM_SESSION_ALREADY_CREATED');
+      } else if (!overwrite && existingSession.version === sessionVersion) {
+        throw new Error('OLM_SESSION_CREATION_RACE_CONDITION');
+      }
     }
 
     const session = new olm.Session();