diff --git a/core/PlayerManager.cpp b/core/PlayerManager.cpp
index 09388bf7..b0c4383f 100644
--- a/core/PlayerManager.cpp
+++ b/core/PlayerManager.cpp
@@ -422,6 +422,8 @@ void PlayerManager::RunAuthChecks()
 			unsigned int client = m_AuthQueue[i];
 			m_AuthQueue[i] = 0;
 			removed++;
+			
+			const char *steamId = pPlayer->GetSteam2Id();
 
 			/* Send to extensions */
 			List<IClientListener *>::iterator iter;
@@ -429,7 +431,7 @@ void PlayerManager::RunAuthChecks()
 			for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)
 			{
 				pListener = (*iter);
-				pListener->OnClientAuthorized(client, authstr);
+				pListener->OnClientAuthorized(client, steamId ? steamId : authstr);
 				if (!pPlayer->IsConnected())
 				{
 					break;
@@ -441,7 +443,8 @@ void PlayerManager::RunAuthChecks()
 			{
 				/* :TODO: handle the case of a player disconnecting in the middle */
 				m_clauth->PushCell(client);
-				m_clauth->PushString(authstr);
+				/* For legacy reasons, people are expecting the Steam2 id here if using Steam auth */
+				m_clauth->PushString(steamId ? steamId : authstr);
 				m_clauth->Execute(NULL);
 			}
 
@@ -707,18 +710,21 @@ void PlayerManager::OnClientPutInServer(edict_t *pEntity, const char *playername
 		cell_t res;
 		m_clconnect_post->PushCell(client);
 		m_clconnect_post->Execute(&res, NULL);
+		
+		const char *steamId = pPlayer->GetSteam2Id();
 
 		/* Now do authorization */
 		for (iter=m_hooks.begin(); iter!=m_hooks.end(); iter++)
 		{
 			pListener = (*iter);
-			pListener->OnClientAuthorized(client, pPlayer->m_AuthID.c_str());
+			pListener->OnClientAuthorized(client, steamId ? steamId : pPlayer->m_AuthID.c_str());
 		}
 		/* Finally, tell plugins */
 		if (m_clauth->GetFunctionCount())
 		{
 			m_clauth->PushCell(client);
-			m_clauth->PushString(pPlayer->m_AuthID.c_str());
+			/* For legacy reasons, people are expecting the Steam2 id here if using Steam auth */
+			m_clauth->PushString(steamId ? steamId : pPlayer->m_AuthID.c_str());
 			m_clauth->Execute(NULL);
 		}
 		pPlayer->Authorize_Post();
@@ -2151,7 +2157,7 @@ const CSteamID &CPlayer::GetSteamId(bool validated)
 
 const char *CPlayer::GetSteam2Id(bool validated)
 {
-	if (validated && !IsAuthStringValidated())
+	if (!m_Steam2Id.length() || (validated && !IsAuthStringValidated()))
 	{
 		return NULL;
 	}
@@ -2161,7 +2167,7 @@ const char *CPlayer::GetSteam2Id(bool validated)
 
 const char *CPlayer::GetSteam3Id(bool validated)
 {
-	if (validated && !IsAuthStringValidated())
+	if (!m_Steam2Id.length() || (validated && !IsAuthStringValidated()))
 	{
 		return NULL;
 	}
diff --git a/extensions/clientprefs/extension.cpp b/extensions/clientprefs/extension.cpp
index 7ff5eee2..a31f42e6 100644
--- a/extensions/clientprefs/extension.cpp
+++ b/extensions/clientprefs/extension.cpp
@@ -394,7 +394,9 @@ void ClientPrefs::CatchLateLoadClients()
 			continue;
 		}
 
-		g_CookieManager.OnClientAuthorized(i, pPlayer->GetAuthString());
+		/* For legacy reasons, OnClientAuthorized gives the Steam2 id here if using Steam auth */
+		const char *steamId = pPlayer->GetSteam2Id();
+		g_CookieManager.OnClientAuthorized(i, steamId ? steamId : pPlayer->GetAuthString());
 	}
 }
 
diff --git a/plugins/include/clients.inc b/plugins/include/clients.inc
index b30a3040..d914e823 100644
--- a/plugins/include/clients.inc
+++ b/plugins/include/clients.inc
@@ -154,14 +154,14 @@ forward Action:OnClientCommand(client, args);
 forward void OnClientSettingsChanged(client);
 
 /**
- * Called when a client receives a Steam ID.  The state of a client's 
+ * Called when a client receives an auth ID.  The state of a client's 
  * authorization as an admin is not guaranteed here.  Use 
  * OnClientPostAdminCheck() if you need a client's admin status.
  *
  * This is called by bots, but the ID will be "BOT".
  *
  * @param client		Client index.
- * @param auth			Client auth string.
+ * @param auth			Client Steam2 id, if available, else engine auth id.
  * @noreturn
  */
 forward void OnClientAuthorized(client, const String:auth[]);
diff --git a/public/IPlayerHelpers.h b/public/IPlayerHelpers.h
index 71c4a333..672cddb5 100644
--- a/public/IPlayerHelpers.h
+++ b/public/IPlayerHelpers.h
@@ -282,7 +282,7 @@ namespace SourceMod
 		 *
 		 * @param validated		Check backend validation status.
 		 * 
-		 * @return			True on success or false if not available.
+		 * @return			Steam2 Id on success or NULL if not available.
 		 */
 		virtual const char *GetSteam2Id(bool validated = true) =0;
 		
@@ -291,7 +291,7 @@ namespace SourceMod
 		 *
 		 * @param validated		Check backend validation status.
 		 * 
-		 * @return			True on success or false if not available.
+		 * @return			Steam3 Id on success or NULL if not available.
 		 */
 		virtual const char *GetSteam3Id(bool validated = true) =0;
 	};
@@ -365,7 +365,7 @@ namespace SourceMod
 		 * @brief Called when a client has received authorization.
 		 *
 		 * @param client		Index of the client.
-		 * @param authstring	Authorization string.
+		 * @param authstring	Client Steam2 id, if available, else engine auth id.
 		 */
 		virtual void OnClientAuthorized(int client, const char *authstring)
 		{