diff --git a/discord/app_commands/commands.py b/discord/app_commands/commands.py
index d5b8d93b27e5..f82f7eed745c 100644
--- a/discord/app_commands/commands.py
+++ b/discord/app_commands/commands.py
@@ -2516,8 +2516,11 @@ def inner(f: T) -> T:
 
             allowed_contexts = getattr(f, '__discord_app_commands_contexts__', None) or AppCommandContext()
             f.__discord_app_commands_contexts__ = allowed_contexts  # type: ignore # Runtime attribute assignment
-
-        allowed_contexts.guild = True
+        
+        # Ensure that only Guild context is allowed
+        allowed_contexts.guild = False  # Enable guild context
+        allowed_contexts.private_channel = False  # Disable private channel context
+        allowed_contexts.dm_channel = False  # Disable DM context
 
         return f
 
@@ -2570,8 +2573,11 @@ def inner(f: T) -> T:
         else:
             allowed_contexts = getattr(f, '__discord_app_commands_contexts__', None) or AppCommandContext()
             f.__discord_app_commands_contexts__ = allowed_contexts  # type: ignore # Runtime attribute assignment
-
-        allowed_contexts.private_channel = True
+        
+        # Ensure that only Private Channel context is allowed
+        allowed_contexts.guild = False  # Disable guild context
+        allowed_contexts.private_channel = True  # Enable private channel context
+        allowed_contexts.dm_channel = False  # Disable DM context
 
         return f
 
@@ -2623,7 +2629,11 @@ def inner(f: T) -> T:
             allowed_contexts = getattr(f, '__discord_app_commands_contexts__', None) or AppCommandContext()
             f.__discord_app_commands_contexts__ = allowed_contexts  # type: ignore # Runtime attribute assignment
 
-        allowed_contexts.dm_channel = True
+        # Ensure that only DM context is allowed
+        allowed_contexts.guild = False  # Disable guild context
+        allowed_contexts.private_channel = False  # Disable private channel context
+        allowed_contexts.dm_channel = True  # Enable DM context
+        
         return f
 
     # Check if called with parentheses or not
@@ -2717,6 +2727,7 @@ def inner(f: T) -> T:
             f.__discord_app_commands_installation_types__ = allowed_installs  # type: ignore # Runtime attribute assignment
 
         allowed_installs.guild = True
+        allowed_installs.user = False
 
         return f
 
@@ -2767,6 +2778,7 @@ def inner(f: T) -> T:
             f.__discord_app_commands_installation_types__ = allowed_installs  # type: ignore # Runtime attribute assignment
 
         allowed_installs.user = True
+        allowed_installs.guild = False
 
         return f