Microsoft has officially released Windows 10 Enterprise LTSC 2021. Businesses that value reliability and security over the latest features will receive support for this Long-Term Servicing Channel (LTSC) Edition for five years.

Windows 10 Enterprise LTSC 2021, which is based on the latest Windows 10 21H2 or November 2021 cumulative Feature Update, is now available to companies and enterprises.

Windows Security app: includes Protection history, including Controlled Folder Access blocks, and Windows Defender Offline Scanning tool actions.

Bitlocker and Mobile Device Management (MDM) with Azure Active Directory: better protection against accidental password disclore though a "new key-rolling feature" which "securely rotates recovery passwords on MDM-managed devices".

Attack surface area reduction: administrators may configure advanced web protections to set allow and deny lists for URLs and IP addresses.

Next Generation protection: extended to protect against ransomware, credential misuse, and removable storage attacks.

Integrity enforcement capabilities: runtime attestation of Windows 10.

Tamper-proofing capabilities: Virtualization-based security that isolates Microsoft Defender for Endpoint security from the OS and potential attackers.

Windows Defender Firewall: includes several new features.

- Reduce the attack surface of a device through rules that restrict or allow traffic using properties such as IP addresses, ports, or program paths.
- Integrated Internet Protocol Security (IPsec), to enforce "authenticated, end-to-end network communications".
- Easier to analyze and debug. IPsec integrated into Packet Monitor.
- Enhanced Windows Defender Firewall event logs.
- Support for Windows Subsystem for Linux (WSL).