WELCOME! This page provides important Exostar’s Managed Microsoft 365 announcements, as well as links to helpful content. Please see Exostar’s Managed Microsoft 365 landing page for additional information.
Version 6.6 Available
Posted November 21, 2025
New Features:
- Block Download by Default: Sponsor Administrators can choose to automatically restrict file downloads for new teams and private channels, enhancing data security and reducing the risk of unauthorized sharing. This setting is available on the new Settings tab under Administration and is enabled by default for all new customers, ensuring stronger protection from day one.
- Copy Exostar Link: A new SharePoint menu item enables sharing document links with partners who authenticate using Exostar’s Managed Access Gateway (MAG). Users will be prompted to authenticate using MAG credentials rather than Microsoft credentials when accessing the file.
Version 6.5 Available
Posted September 25, 2025
New User Registration Update: To support future compliance requirements, the MAG self-registration process now includes a registration token.
- All new invitations will contain a unique token, valid for 7 days.
- Existing invitations without a token will remain valid until further notice.
Compliance Documents: Compliance documentation to support your audit assessments is now available for download under the Administration tab.
Version 6.4 Available
Posted August 20, 2025
File Drop Automatic Export: Save time and clicks with the new option to automatically export messages from the file drop inbox directly to your team.
Send File Externally with CC and BCC Recipients: When sending files externally, you can now add recipients in CC and BCC for greater flexibility and control.
Version 6.3.1 Available
Posted July 22, 2025
File Drop Notifications: We’ve resolved the issue preventing team managers from receiving notification emails when messages are received in the File Drop Inbox.
SharePoint Site Settings Update: To ensure all permissions remain managed and visible through the Exostar app, we’ve disabled the ability for team members to share files, folders, or sites directly within all SharePoint sites (including Teams and private channels).
Version 6.3 Available
Posted June 25, 2025
Send File Externally: We’ve increased the file size limit when sending files externally to 25 MB.
Known Issue: We are currently aware of an issue where team managers are not receiving email notifications for new messages in the File Drop inbox. Our team is actively working to resolve this with high priority. A fix is scheduled for inclusion in the upcoming 6.3.1 release.
Version 6.2 Available
Posted May 20, 2025
File Drop Enablement Issue Update: On May 12, 2025, we became aware of an issue where enabling the File Drop feature would fail to update mailbox configuration yet incorrectly appear as successful. We’ve partially resolved this issue in version 6.2 and the feature can now be reliably enabled for new teams. For existing teams, if mailbox configuration fails, users will now see an error message and the feature will not be marked as enabled. We are continuing to work with Microsoft to fully resolve the issue and support successful mailbox configuration and feature enablement for existing teams. In the event you are unable to enable team file drop, please contact Customer Support to have the proper configuration applied.
View the full release notes here.
Urgent Service Update (Outlook Web Access)
Posted May 6, 2024
Exostar’s Managed Microsoft 365 service currently does not include Microsoft Office OWA (Outlook Web App) for email and calendar functionality. As a result, access to this service is being disabled.
We understand from customer feedback that this feature is highly valued, and we are actively working to reinstate it in a compliant and secure manner.
In the meantime, we will be reaching out directly to customers who have made significant use of this capability. Please reach out to your dedicated Customer Success Manager with any questions or concerns.
Version 6.1 Available
Posted May 6, 2025
Sponsor Administrators and Team Managers can now add, archive, and delete private channels, as well as manage channel memberships using the Exostar app. The ability for team members to create and own private channels has been removed. For more information, click here.
View the full release notes here.
Older Release Notes
Version 5.13 Available
Posted February 20, 2025
We’ve added My Calendar. Enterprise customers now have access to an app that offers a direct link to the Outlook calendar for scheduling meetings.
View the full release notes here.
Version 5.12 Available
Posted December 9, 2024
We’ve added the SharePoint Audit Report under Reports where Sponsor Administrators can retrieve SharePoint audit logs for their teams. For more information click here.
Version 5.11 Available
Posted November 7, 2024
We’ve added a Permissions tab under Manage Teams where Team Managers and Sponsor Administrators can block download at the site level once a site has been created. For more information click here.
Version 5.10 Available
Posted October 10, 2024
Exostar’s Managed Microsoft 365 version 5.10 is now available! Sponsor Administrators and Team Managers can choose to archive teams that are no longer in use. When a team is archived, all users are removed from the team and any private channels. Team content is preserved and can be restored indefinitely.
Deleted teams are now sent to the SharePoint recycle bin and can only be restored within 30 days of deletion.
NOTE: Teams that were deleted prior to Version 5.10 have been marked as “archived”. Sponsor Administrators can visit the Archived Teams tab under Administration to view and manage these teams.
CrowdStrike production outages at Exostar
Posted July 19, 2024
- Here at Exostar, we take security and compliance incredibly seriously. CrowdStrike provides deep analysis capabilities to secure against malicious attacks before zero-day announcements. Like other organizations, our products are secured by CrowdStrike. As such Managed Access Gateway was down on July 19th all day.
- Exostar personnel worked diligently over the weekend and although Managed Microsoft 365 tenants were not affected directly and Azure B2B users were able to login, once Microsoft fixed their side. MAG users were able to access Managed Microsoft 365 from Monday morning, July 22nd.
- We apologize for the inconvenience and appreciate your understanding.
Managed Microsoft 365 Free Trial Available
- As we ramp up to the CMMC 2.0 legislation becoming law later this year, Exostar has released a Free Trial of the Managed Microsoft 365 service.
- For 30 days, you get 5 users with MFA tokens, 1GB storage and full functionality, including our Compliant File Drop feature.
- If your partners decide they like the product, they can purchase the solution and continue with the environment they have set up over the last 30 days.