Mac users can't release messages from Exchange Online Protection quarantine
Original KB number: 2909418
Problem
When a user tries to release a message from the Exchange Online Protection quarantine when using the Safari browser on a Mac, the user is prompted for a certificate as follows:
The website "na01-quarantine.dataservice.protection.outlook.com" requires a client certificate.
Solution
To resolve this issue, follow these steps:
- Locate the Keychain Access program on the Mac. To do this, open Finder, and then open the Applications folder. The Applications folder contains a folder that's named Utilities. The Keychain Access program is in the Utilities folder.
- Open Keychain Access, and then locate all certificates in the Safari dialog box that show as This client requires a certificate.
- Select the certificates that you located in step 2, and then delete them from Keychain Access.
- Restart Safari.
More information
Third-party information disclaimer
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
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