: Older cloud-managed versions like SEP Cloud (SEPC) and Small Business Edition reached EOL on December 7, 2020
Before starting your Symantec Endpoint Protection 15 download , ensure your systems meet these minimum specs: System Requirements for Symantec Endpoint Security
SEP 15 offers a range of advanced features that make it an ideal endpoint security solution for organizations. Some of the key features of SEP 15 include: Symantec Endpoint Protection 15 Download
The "Download Insight" and "Proactive ML Scanner" uses models trained on billions of file samples. It predicts if a file is malicious before it executes—zero-day protection that does not require a signature update.
| Component | Description | File name example | |-----------|-------------|-------------------| | | Includes Server, Manager, Database, Console, Client | SEP_15.3_Win64_Full.exe | | Client-only (32/64-bit) | For endpoints connecting to an existing SEPM | SEP_15.3_Client_64bit.exe | | Mac Client | For macOS endpoints | SEP_15.3_Mac.dmg | | Linux Client | For Red Hat, Ubuntu, SUSE | SEP_15.3_Linux.tar.gz | | SEPM Migration Tool | For upgrading from older SEP versions | SEPM_Migration_Tool.zip | : Older cloud-managed versions like SEP Cloud (SEPC)
The same agent manages antivirus, firewall, IPS, device control, and EDR. This reduces system conflicts and requires fewer reboots.
| Error Code | Description | Solution | | :--- | :--- | :--- | | | Fatal installation error. | Clean temporary files, disable other AV temporarily, run the Microsoft Installer CleanUp tool. | | 1304 | Error writing to file. | Check disk permissions. Run installer as administrator. Disable UAC temporarily. | | Connection Failed | Client cannot reach SEPM. | Verify firewall rule (Port 443/8443 inbound). Ensure the client DNS resolves the SEPM hostname. | | Old version detected | SEP 12 or 14 remnants. | Use the CleanWipe utility (available with your download) to fully remove old entries from the registry. | | SHA-2 Code Signing Error | Windows 7/Server 2008 R2 missing updates. | Install Microsoft update KB4474419 (SHA-2 support) before installing SEP 15. | | Component | Description | File name example
: Recently announced for Windows (June 2025) and Mac (February 2026). End of Life (EOL)
SEP 15 provides various deployment options to ensure that your endpoints are protected. Some of the deployment options include: