09.05.2021 · Blocking Attachments based on the File Extension on Microsoft 365 May 9, 2021 May 9, 2021 Kent Chen Microsoft After getting a lot of phishing emails with suspicious HTML attachments, I was scared and decided to pull the trigger to get them blocked on the server level so no one will see them in their Outlook inbox.
How to Block Dangerous File Type in Office 365/ Exchange. Open the Exchange admin panel and navigate to mail flo –> rules and click + to add a new rule. Give your rule a name and click on more options at the bottom of the windows to display more options. Create a rule that flags any attchments that have specific file name pattern.
29.05.2020 · I find it odd that Microsoft go to the trouble of listing 96 file extensions as standard that can be blocked by Office 365 including docm, but do not include xlsm, xltm or dotm extensions as standard, surely they are equally as risky.
02.08.2021 · Office 365. Security, Compliance and Identity. Windows Server. Microsoft Edge Insider. Azure. Microsoft 365. Azure Databases. Fully managed intelligent database services. ... You can block file types that users should not be able to sync using onedrive sync client (both to OneDrive and SharePoint).
Microsoft 365 Defender. This article provides frequently asked questions and answers about anti-malware protection for Microsoft 365 organizations with mailboxes in Exchange Online, or standalone Exchange Online Protection (EOP) organizations without Exchange Online mailboxes. For questions and answers about the quarantine, see Quarantine FAQ.
What file extensions are blocked in Office 365? ;.exe, 32-bit Windows executable file ;.vxd, Microsoft Vizio XML drawing file ;.os2, OS/2 operating system file.
03.06.2016 · Anyone who works with Office 365 knows that there is no shortage of new features rolling out, ... There’s always been a way to block attachments by extension in EOP via a transport rule. ... there is a default list of 10 file extensions that Microsoft has selected and you can add more from a pre-defined list of 96 file extensions.
15.10.2021 · Select the Block upload of specific file types check box. Enter the file name extensions you want to block, for example: exe or mp3. Do not include the periods with the extensions, or any other punctuation, spaces, or special characters. Select Save. When you configure this setting, it takes approximately 8 hours for the OneDrive sync app to ...
drop down box, hover the mouse over "Any attachment" and from the pop out box, select "file extension includes these words" In the "Specify words or phrases" box, enter each extension you wish to block individually and without a . in front of the extension and click the "+" icon after each (A sample list is below) - To remove one, select the extension and use the "-" icon.