# Teams gets admin control over dangerous file types

> Microsoft is letting workplace admins decide which files Teams users can send, aiming for November 2026 rollout.
- Title: Teams gets admin control over dangerous file types · TechRadar
- Summary: Microsoft is letting workplace admins decide which files Teams users can send, aiming for November 2026 rollout. Microsoft Teams admins will soon customize…
- Keywords: microsoft teams, weaponizable file protection, security controls, file blocking, malware prevention, admin controls, technology, Teams, gets, admin, control, dangerous
- Source: TechRadar — https://techradar.com/pro/security/microsoft-teams-is-finally-boosting-security-controls-to-let-admins-block-custom-file-extensions
- Published: 2026-09-21T13:11:13+00:00
- Read time: 1 min
- Topics: microsoft teams, weaponizable file protection, security controls, file blocking, malware prevention, admin controls, technology
## Teams attacks are on the rise
Microsoft Teams has become an attractive environment for attackers lately. The collaboration app is increasingly targeted by malicious actors seeking to spread harmful content.
## Why Teams is vulnerable to attack
Teams traffic typically bypasses secure email gateways and benefits from the perceived legitimacy of colleague-initiated chat, making lures particularly effective in this environment.

> Unlike email, Teams traffic typically bypasses secure email gateways and benefits from the perceived legitimacy of a colleague-initiated chat, which can make lures particularly effective in this environment
## Weaponizable File Protection launches
Microsoft rolled out Weaponizable File Protection to Teams in early twenty twenty-six. The tool automatically scanned for potentially dangerous attachments but lacked customization options.
## Admins get file type control
Administrators will now customize which file types are blocked in Teams to align with their organization's security requirements or continue using Microsoft-recommended defaults.

> Administrators will be able to customize which file types are blocked in Teams to align with their organization's security requirements or continue using the Microsoft-recommended default list
## November twenty twenty-six rollout planned
Microsoft is aiming for a November twenty twenty-six rollout of the customizable file blocking feature. Admins will gain greater control over which file types are blocked across their organizations.
## Broader Teams security upgrades coming
November twenty twenty-six will also bring simultaneous screen sharing for two presenters, breakout room support for Android, and a Meeting Shared Files window for accessing meeting attachments.
## Key takeaway

Microsoft Teams admins will soon customize which file types are blocked to prevent malware spread, with rollout expected November 2026.