> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gumloop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# When Do Permission Changes Show Up?

After the next sync of the source. Brain captures each document's sharing settings at **sync time**, not live. Run a manual sync to see a permission change immediately, or wait for the next scheduled sync (typically hourly).

To sync manually, open the knowledge source in Brain and use its sync action. Once the sync finishes, the updated permissions apply right away in search, browse, and agent answers.

## FAQ

<AccordionGroup>
  <Accordion title="I synced right after sharing a big folder and some files are still hidden">
    Some providers propagate container level permissions to individual documents gradually, so a sync run immediately after sharing can catch documents mid update. Wait a few minutes and sync again.
  </Accordion>

  <Accordion title="Do I need to re sync for a new person to see already indexed documents?">
    Only if the sharing changed in the original system. If the documents were already shared with them at the last sync, access applies immediately once they can see the source.
  </Accordion>

  <Accordion title="I revoked someone's access in the original system. When does Brain stop showing them the document?">
    At the next sync of that document. Run a manual sync to apply it immediately.
  </Accordion>
</AccordionGroup>

## Related

<CardGroup cols={2}>
  <Card title="Why is a document missing?" icon="file-magnifying-glass" href="/help/brain/why-is-a-document-missing">
    Document access rules
  </Card>

  <Card title="Brain" icon="brain" href="/core-concepts/brain">
    Sync and sources reference
  </Card>
</CardGroup>