Groups and Notifications

Fix silent desktop groups by checking mute, app preferences, and operating-system settings.

Verify a Telegram Desktop group or channel invitation and account before joining.

Diagnose a silent group by checking message arrival, mute, app preferences, and system permission.

Locate a group attachment, save a reliable copy, and verify the sender and audience.

Protect codes and local files, sign out, and review active sessions after shared-computer use.