Windows Defender in Windows 10 or Windows 8.1 is set to automatically download and install the definition updates using Windows Update, once a day. If for some reason, your Windows Defender will not update automatically, or if you wish to download and save the definition updates in order to maybe update Windows Defender offline, on different installations of Windows 10/8/7/Vista, then this post will be of interest to you.
We have already seen how to download Windows Update manually. Today, we will see how you can update Windows Defender manually in Windows 10, Windows 8.1 and Windows 7. I will also give links for downloading updates for Microsoft Security Essentials in the post.
Update Windows Defender manually
First, check whether you are using a 32-bit or 64-bit version of Windows 10/8.1/7. Once you know the version of Windows installed on your device, download the installers from the following links:
- Download definition updates for Windows Defender in Windows 10, Windows 8.1/8: 32-bit | 64-bit | ARM.
- Download definition updates for Windows Defender in Windows 7 and Windows Vista: 32-bit | 64-bit.
- Download definition updates for Microsoft Security Essentials: 32-bit | 64-bit.
Once the file has finished downloading, go to your download location and double-click the file mpam–fe.exe. Follow the prompts to install the update.
You can also update Windows Defender definitions using Windows PowerShell.
If you think some malware is preventing the installation of Windows Defender definition updates, you may want to run a scan with Microsoft Safety Scanner or for more stubborn malware, using Windows Defender Offline.
See how to update Windows 10 offline.
These links are sure to interest you too:
- Update Windows Defender even when Automatic Windows Updates is disabled
- Windows Defender is turned off or not working
- Unable to turn on Windows Defender
- Add Scan With Windows Defender To Context Menu.