| Hotfix for MailStore Server & SPE 12.1.3 Due to a critical security vulnerability in the Outlook Add-in we recommend to update to the latest version. Today, we released a security fix for the MailStore Outlook Add-in. Due to a critical security vulnerability discovered during work on the next main version, we are now urgently advising that your clients’ installations are updated to the hotfix version provided. The update to the MailStore Outlook Add-in can be found in our Downloads section linked below. You will find further technical details in the changelog for MailStore Server, as well as in the security advisory notice on our website. Notes on MailStore Service Provider Edition Service providers who are offering their customers email archiving as a service on the basis of the MailStore Service Provider Edition (SPE) can download the hotfix via the Management Console or from the default page of the Client Access Server (CAS). Please note that service providers must update to the latest version of MailStore SPE before users of the service will have access to the updated Outlook Add-in. You can find further technical details in the changelog for MailStore SPE, as well as in the security advisory notice on our website. And, of course, our Technical Support team is always on hand to provide customers with advice and assistance:https://www.mailstore.com/en/support/partner Please visit our blog for more details about this hotfix. |
| Download SectionRead the Blog Post Changelog MailStore Server | Changelog MailStore SPE |
September 29, 2025
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