diff --git a/modules/features/teamsbot/routeFeatureTeamsbot.py b/modules/features/teamsbot/routeFeatureTeamsbot.py
index abac3ef0..52a3ba72 100644
--- a/modules/features/teamsbot/routeFeatureTeamsbot.py
+++ b/modules/features/teamsbot/routeFeatureTeamsbot.py
@@ -201,44 +201,49 @@ async def startSession(
     botAccountEmail = None
     botAccountPassword = None
 
-    # Load system bot from DB (try mandate-specific first, then any active bot)
-    systemBot = interface.getActiveSystemBot(mandateId)
-    if not systemBot:
-        from .datamodelTeamsbot import TeamsbotSystemBot
-        allBots = interface.db.getRecordset(TeamsbotSystemBot, recordFilter={"isActive": True})
-        if allBots:
-            systemBot = allBots[0]
-            logger.info(f"No mandate-specific system bot, using fallback: {systemBot.get('name')} ({systemBot.get('email')})")
+    # System bot access: only SysAdmin can use the system bot account.
+    # Non-SysAdmin users are forced to anonymous join to prevent concurrent
+    # access conflicts (a Microsoft account can only be in one meeting at a time).
+    if context.isSysAdmin:
+        systemBot = interface.getActiveSystemBot(mandateId)
+        if not systemBot:
+            from .datamodelTeamsbot import TeamsbotSystemBot
+            allBots = interface.db.getRecordset(TeamsbotSystemBot, recordFilter={"isActive": True})
+            if allBots:
+                systemBot = allBots[0]
+                logger.info(f"No mandate-specific system bot, using fallback: {systemBot.get('name')} ({systemBot.get('email')})")
 
-    if systemBot:
-        if not effectiveBotName:
-            effectiveBotName = systemBot.get("name")
-        # Derive display name from email if system bot has no explicit name
-        # e.g. "nyla.larsson@poweron.swiss" → "Nyla Larsson"
-        if not effectiveBotName:
-            sbEmail = systemBot.get("email", "")
-            if sbEmail and "@" in sbEmail:
-                emailPrefix = sbEmail.split("@")[0]
-                effectiveBotName = " ".join(part.capitalize() for part in emailPrefix.split("."))
-                logger.info(f"Bot name derived from email: {effectiveBotName}")
-        if not effectiveBotName:
-            effectiveBotName = effectiveConfig.botName
-        logger.info(f"System bot found: {systemBot.get('name')} ({systemBot.get('email')}), effectiveBotName={effectiveBotName}")
+        if systemBot:
+            if not effectiveBotName:
+                effectiveBotName = systemBot.get("name")
+            if not effectiveBotName:
+                sbEmail = systemBot.get("email", "")
+                if sbEmail and "@" in sbEmail:
+                    emailPrefix = sbEmail.split("@")[0]
+                    effectiveBotName = " ".join(part.capitalize() for part in emailPrefix.split("."))
+                    logger.info(f"Bot name derived from email: {effectiveBotName}")
+            if not effectiveBotName:
+                effectiveBotName = effectiveConfig.botName
+            logger.info(f"System bot found: {systemBot.get('name')} ({systemBot.get('email')}), effectiveBotName={effectiveBotName}")
 
-        # Load and decrypt credentials for authenticated join
-        botAccountEmail = systemBot.get("email")
-        encryptedPwd = systemBot.get("encryptedPassword")
-        if botAccountEmail and encryptedPwd:
-            try:
-                from modules.shared.configuration import decryptValue
-                botAccountPassword = decryptValue(encryptedPwd, userId=str(context.user.id), keyName="systemBotPassword")
-                logger.info(f"System bot credentials loaded and decrypted for: {botAccountEmail}")
-            except Exception as e:
-                logger.warning(f"Could not decrypt system bot password: {e} — falling back to anonymous join")
-                botAccountEmail = None
-                botAccountPassword = None
+            botAccountEmail = systemBot.get("email")
+            encryptedPwd = systemBot.get("encryptedPassword")
+            if botAccountEmail and encryptedPwd:
+                try:
+                    from modules.shared.configuration import decryptValue
+                    botAccountPassword = decryptValue(encryptedPwd, userId=str(context.user.id), keyName="systemBotPassword")
+                    logger.info(f"System bot credentials loaded and decrypted for: {botAccountEmail}")
+                except Exception as e:
+                    logger.warning(f"Could not decrypt system bot password: {e} — falling back to anonymous join")
+                    botAccountEmail = None
+                    botAccountPassword = None
+        else:
+            logger.info("No system bot found in DB — using anonymous join")
     else:
-        logger.info("No system bot found in DB — using anonymous join")
+        if body.joinMode == TeamsbotJoinMode.SYSTEM_BOT:
+            logger.warning(f"Non-SysAdmin user {context.user.id} attempted to use system bot — forced to anonymous join")
+        joinMode = TeamsbotJoinMode.ANONYMOUS
+        logger.info(f"Non-SysAdmin user {context.user.id}: using anonymous join (system bot restricted to SysAdmin)")
 
     if not effectiveBotName:
         effectiveBotName = effectiveConfig.botName
@@ -588,6 +593,8 @@ async def listSystemBots(
     context: RequestContext = Depends(getRequestContext),
 ):
     """List all system bot accounts for this mandate. Passwords are never returned."""
+    if not context.isSysAdmin:
+        raise HTTPException(status_code=403, detail="SysAdmin privileges required to manage system bots")
     mandateId = _validateInstanceAccess(instanceId, context)
     interface = _getInterface(context, instanceId)
     bots = interface.getSystemBots(mandateId)
@@ -602,6 +609,8 @@ async def createSystemBot(
     context: RequestContext = Depends(getRequestContext),
 ):
     """Create a new system bot account. Password is encrypted before storage."""
+    if not context.isSysAdmin:
+        raise HTTPException(status_code=403, detail="SysAdmin privileges required to manage system bots")
     mandateId = _validateInstanceAccess(instanceId, context)
     interface = _getInterface(context, instanceId)
     
@@ -643,6 +652,8 @@ async def deleteSystemBot(
     context: RequestContext = Depends(getRequestContext),
 ):
     """Delete a system bot account."""
+    if not context.isSysAdmin:
+        raise HTTPException(status_code=403, detail="SysAdmin privileges required to manage system bots")
     _validateInstanceAccess(instanceId, context)
     interface = _getInterface(context, instanceId)
     
@@ -745,6 +756,8 @@ async def testAuth(
     receive the /v2/ (authenticated) vs light-meetings (anonymous) page.
     Does NOT join the meeting — only checks which page Teams serves.
     """
+    if not context.isSysAdmin:
+        raise HTTPException(status_code=403, detail="SysAdmin privileges required for auth testing (uses system bot credentials)")
     import aiohttp
 
     mandateId = _validateInstanceAccess(instanceId, context)
@@ -855,6 +868,8 @@ async def getTestAuthVariants(
     Get list of available test variant IDs from the Browser Bot.
     Frontend calls this once, then runs each variant individually.
     """
+    if not context.isSysAdmin:
+        raise HTTPException(status_code=403, detail="SysAdmin privileges required for auth testing")
     import aiohttp
 
     _validateInstanceAccess(instanceId, context)
@@ -889,6 +904,8 @@ async def testAuthSingleVariant(
     Run a single test variant. Frontend calls this once per variant (sequentially).
     Each call stays within Azure's 240s timeout.
     """
+    if not context.isSysAdmin:
+        raise HTTPException(status_code=403, detail="SysAdmin privileges required for auth testing (uses system bot credentials)")
     import aiohttp
 
     mandateId = _validateInstanceAccess(instanceId, context)