Saturday, September 9, 2017
Updating your Microsoft antimalware and antispyware software
Updating your Microsoft antimalware and antispyware software
This page explains how updates work and where to get them.
If you dont already have Microsoft security software, or you want to reinstall it, see our software download page.
If youre using Windows XP, see our Windows XP end of support page.
For a list of the latest updates see the change log.
Windows will automatically download and install updates once a day for you.
If automatic updates arent working there might be an issue with your PC:
- Fix a problem with Microsoft Windows Update
- Reset Windows Update components
- Some malware can turn off Microsoft Update. See our advanced troubleshooting page for help.
You can also force a download of the latest daily update. This is the same as when Windows automatically downloads the update, and can be useful if you arent always connected to the Internet or havent turned your PC on for a few days.
If you want a more recent update (usually uploaded to this page within the last three hours), you canmanually download and install it.
Force a daily update
If you want Windows to update your software, go to Windows Update or:
- Open your Microsoft security software.
- Click the Update tab.
- Click the Update button.
Because these updates change once a day, the definition version might be different to what is shown on this page, even after youve clicked the Update button.
Usually, updating once a day gives you a good level of protection, and it prevents us from constantly updating your software and interfering with how you use your PC.
Sometimes you might want to update more often. This can be helpful if you have hard-to-remove malware, Windows update isnt working properly, or you arent always connected to the Internet.
Manually download the latest updates
If you need to get the latest updates available, you can download and install them from here.
For all Microsoft security software, you will need to download the antimalware and antispyware updates.
Antimalware and antispyware updates
For antimalware and antispyware, the latest definitions are 1.225.1177.0, dated Jul 11, 2016 10:13 AM UTC.
To download these updates:
- Check whether your version of Windows is 32-bit or 64-bit.
- In the table below, right-click on the link that will work for your version of Windows and choose Save target as... or Save link as...
- Save the file to your Desktop.
- When the file has finished downloading, go to your Desktop and double-click the file (it will be calledmpam-fe.exe, mpas-fe.exe, or mpam-feX64.exe).
- Follow the prompts to install the update.
You can find out more about our products on the Microsoft security software page.
| Antivirus and antispyware definitions (choose either 32-bit or 64-bit depending on your computer) | |
|---|---|
| Microsoft Security Essentials | 32-bit | 64-bit |
| Windows Defender in Windows 10 and Windows 8.1 | 32-bit | 64-bit | ARM |
| Windows Defender in Windows 7 and Windows Vista | 32-bit | 64-bit |
| Microsoft Diagnostics and Recovery Toolset (DaRT) | 32-bit | 64-bit |
| Forefront Client Security | More information |
| Forefront Server Security | 32-bit | 64-bit |
| Forefront Endpoint Protection | 32-bit | 64-bit |
| System Center 2012 Configuration Manager | 32-bit | 64-bit |
| System Center 2012 Endpoint Protection | 32-bit | 64-bit |
| Windows Intune | 32-bit | 64-bit |
End of life for Microsoft Forefront Client Security was on July 14th 2015. Customers are encouraged to migrate to System Center Endpoint Protection.
For more information see the Forefront Client Security entry at the Microsoft Support Lifecycle site.
You can download the last available definition package, dated July 14th, 2015 for 32-bit or 64-bit. Note that this package will not include any newer updates made after July 14th, 2015, and may leave your PC unprotected.
Network Inspection System&n
download file now
