Hello Rafael Moraes,
Copilot Studio agents may appear missing due to environment or solution context changes,broken links caused by environment mismatches or expired sessions. Permissions or licensing issues can also prevent agents from appearing.
To fix this, verify you’re in the correct environment and solution, refresh your session (sign out/in or clear cache), and confirm the agent is published and shared with your account. If links are broken, search for the agent directly in Copilot Studio or request it be re-shared. Workarounds include switching environments or importing the agent into a new solution if available.
You can follow these Official Docs for your reference:
Agent Publishing & Sharing Guidance
https://learn.microsoft.com/en-us/microsoft-copilot-studio/publication-add-bot-to-microsoft-teams
Share agents with other users (permissions and collaboration):
https://learn.microsoft.com/en-us/microsoft-copilot-studio/admin-share-bots?tabs=web
Publication fundamentals & channel management (ensuring the agent is deployed correctly before sharing):
Sharing controls & tenant limits (if org-level policies are blocking access): 🔗 https://learn.microsoft.com/en-us/microsoft-copilot-studio/admin-sharing-controls-limits