Exostar Secure Messaging Training Resources

SymptomLikely CauseResolution
Capability toggles locked off for a user Email not on a registered domain Add the domain under Domains, or keep the user as a Participant. 
Cannot add a user — seats full Total or Thread Manager Seat cap reached Contact [email protected] to raise the cap. 
Cannot remove a domain Users on it hold Sponsor Admin or Manage Threads Use View affected users, remove capabilities, then remove the domain. 
Thread shows “Awaiting reassignment by Sponsor Admin” Thread is orphaned (manager removed) Go to Administration → Threads → Orphaned and reassign a manager. 
Participant cannot create threads Lacks Manage Threads capability Turn on Manage Threads for them on the Users page. 
Reply box unavailable Thread is Locked, Archived, or Orphaned Reactivate/unlock it, or reassign a manager if orphaned. 
User shows Pending indefinitely Exostar Network Identity not yet active Status clears automatically. Re-send from Add User if needed. 
Cannot delete a message or file Thread is not Active, or not a thread the user manages Sponsor Admins and Thread Managers can delete any content on Active threads they manage. 
File upload seems stuck Browser tab closed during upload Re-attach the file and keep the tab open until the progress bar completes. 
No Thread Managers in Transfer dialog No current participants hold Manage Threads Grant Manage Threads to another participant on this thread from the Users page. 

Participant Troubleshooting

SymptomLikely CauseResolution
Access Denied after signing inNot registered or invitedContact your Sponsor Admin or Exostar support, then select Sign In Again.
No New Thread buttonManage Threads not grantedAsk your Sponsor Admin to enable it.
Reply box unavailable or shows thread status messageThread is Locked, Archived, or OrphanedWait for the thread to be reactivated or reassigned. Contact your Sponsor Admin.
File upload seems stuckTab closed or refreshed during uploadRe-attach the file and keep the tab open until the progress bar completes.
Cannot delete a message or fileNot the author/uploader, or thread is not ActiveYou can delete only your own content on Active threads.
A participant you added shows PendingNo MAG account yetThey received an invitation. Status clears when their account activates.
No Thread Managers in Transfer dialogNo other current participants hold Manage ThreadsAsk your Sponsor Admin to grant Manage Threads to another participant on this thread first.

Thread States

StateWhat it means
ActiveNormal — messaging and file sharing available. 
LockedRead-only. No new messages. Thread Manager or SA can unlock. 
ArchivedRead-only. All participants except Thread Manager removed. SA or Thread Manager can reactivate. 
OrphanedThread Manager removed with no successor. Auto-locked until a Sponsor Admin reassigns a Thread Manager. 

Participant Chip States

Chip AppearanceMeaning
Default chip Active participant
Thread Manager badge This participant has authority over the thread
Pending badge Invited but MAG account not yet active. 
Strikethrough + Removed badge Removed from thread. Past messages remain attributed. Can be re-added. 

Glossary

TermDefinition
Thread A secure conversation with a subject, participants, messages, and files. 
Thread ManagerThe user with authority over a specific thread — can lock, archive, transfer, delete, and manage participants. 
Manage Threads The capability that lets a Participant create and manage threads. 
SponsorYour customer organization on the tenant. Your users, domains, and threads belong to your sponsor. 
CUIControlled Unclassified Information. Markings applied per message and per file. 
Thread Manager Seats Seats eligible for Sponsor Admin or Manage Threads. Sub-cap within Total Seats. 
Active Exostar Network Identity An active MAG account. Required for sign-in. Users without one show as Pending. 
Orphaned ThreadA thread with no active Thread Manager. Auto-locked pending Sponsor Admin reassignment. 
Initiator The user who created a thread. Shown in the thread header. 
PendingA user whose MAG account is not yet active. They cannot sign in until it is activated. 
Updated on October 20, 2026

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