Microsoft Outlook Issue impacting SendSafely Add-in

Update timeline

1. identified May 29, 2025, 06:47 PM UTC

   On May 29, 2025, SendSafely became aware of an issue affecting Microsoft Outlook. This issue appears to be affecting multiple 3rd party vendor applications and may impact the functionality of our new SendSafely Outlook add-in. As such we’ve temporarily disabled the SendSafely Outlook add-in for all users as we investigate. Note - The legacy SendSafely plugin for Outlook Classic is not impacted by this Microsoft issue. To understand what version you are using refer to this Help Center Article: https://sendsafely.zendesk.com/hc/en-us/articles/24944812327437-SendSafely-for-Outlook-Legacy-Plug-in-vs-New-Outlook-for-Web-add-in

2. monitoring Jun 13, 2025, 06:10 PM UTC

   An update for our Outlook Add-in has been released and access to login has been restored. While some features are unavailable, the ability to send secure files is restored. SendSafely’s documentation on the Outlook Add-in has been updated to reflect these changes: https://sendsafely.zendesk.com/hc/en-us/articles/24618218120077-The-new-SendSafely-Outlook-add-inhttps://sendsafely.zendesk.com/hc/en-us/articles/24944812327437-SendSafely-for-Outlook-Legacy-Plug-in-vs-New-Outlook-for-Web-add-in Please Note: The SendSafely Outlook add-in must be installed by a Microsoft Administrator from the Microsoft 365 admin center. Installation instructions are available from Microsoft here. https://learn.microsoft.com/en-us/microsoft-365/admin/manage/manage-deployment-of-add-ins?view=o365-worldwide%C2%A0 Due to recent Microsoft updates to the Outlook Add-in framework, the SendSafely Add-in for Outlook is only available and supported for use by Microsoft work and school accounts whose administrator has installed the add-in via the Microsoft 365 admin center.

3. resolved Jun 16, 2025, 08:29 PM UTC

   An update for our Outlook Add-in has been released and access to login has been restored.