Data Protection Issues

Should You Disable Microsoft Defender When Transferring Files to Mac?

Elise Williams Oct 9, 2026 869 views

Question details

The user is questioning whether it is safe or necessary to turn off Microsoft Defender antivirus protection when transferring files from a Windows computer to a Mac.

Should You Disable Microsoft Defender When Transferring Files to a Mac?

Product: Windows Security (Microsoft Defender)
Device & OS: Windows PC, Mac
Scenario: Migrating personal files, documents, and accounts from a Windows laptop to a MacBook Air.
Observed behavior: Migration instructions occasionally suggest disabling antivirus software to prevent interference, raising concerns about malware exposure during the transfer.

Before you start

Before transferring any files, ensure that your Microsoft Defender virus definitions are completely up to date and that both devices are connected to a secure, private network.

Solution 1Recommended

Keep Defender Enabled and Scan Files Before Transfer

This is the safest and most recommended approach. Keep your antivirus active unless explicitly told otherwise by official Apple or Microsoft migration tools.

In most scenarios, transferring files to a Mac via an external drive, cloud storage, or a local network does not require you to disable your antivirus. Keeping it on ensures that you do not accidentally migrate infected files to your new device.

Update Windows Security

Open the Start menu, type 'Windows Security', and open the app. Navigate to 'Virus & threat protection' and click 'Check for updates' under the Virus & threat protection updates section.

Scan the transfer folder

Gather all the files you intend to transfer into a specific folder. Right-click that folder and select 'Scan with Microsoft Defender' to ensure the files are clean.

Perform the file transfer

Use your preferred method (such as an external USB drive or a trusted cloud service) to copy the scanned files from the Windows PC to your MacBook Air.

Keep Defender Enabled and Scan Files Before Transfer

Security Maintained: By scanning the files beforehand, you guarantee that malicious scripts or macro viruses are caught before they reach your macOS environment.

Solution 2

Temporarily Disable Defender (Only if Required by Official Tools)

Use this solution only if you are using an official migration software (like Windows Migration Assistant for Mac) and the documentation specifically demands disabling the antivirus.

Free Microsoft Office alternative

Open Your Transferred Documents Seamlessly on Mac with WPS Office

After safely moving your files from a Windows PC to your new Mac, you will need a reliable suite to open and edit your documents. WPS Office is a highly compatible, free, and lightweight alternative to Microsoft Office that works flawlessly on macOS.

1. Download WPS for Mac: Visit the official WPS website on your MacBook and download the macOS installer.
2. Install the application: Open the downloaded .dmg file and drag the WPS Office icon to your Applications folder.
3. Open transferred files: Double-click your migrated Word, Excel, or PowerPoint files to open them seamlessly in WPS Office.

High compatibility with Microsoft Office formats (DOCX, XLSX, PPTX)Cross-platform support ensures your documents look identical on Windows and MacLightweight installation saves valuable disk space on your MacBook AirAll-in-one interface lets you manage Word, Excel, and PDF files in one window

microsoft office alternative - wps office

Frequently Asked Questions

Can a Mac get a virus from a transferred Windows file?

Yes. While standard Windows executable viruses (.exe) cannot run on macOS, macro viruses embedded in Office documents or cross-platform malware can still pose a significant threat to your Mac.

Why do some migration tools ask to disable Microsoft Defender?

Some network-based migration tools transfer massive amounts of data at high speeds. Active antivirus software scans every packet, which can sometimes cause timeouts, corrupted transfers, or connection drops.

Is Windows Migration Assistant safe to use without antivirus?

If you are using the official Windows Migration Assistant provided by Apple, it is generally safe to temporarily disable your antivirus, provided you are on a trusted home network and re-enable the protection immediately after the transfer.

How do I check if my files were corrupted during the transfer?

Open a sample of your transferred documents, spreadsheets, and images on your Mac. If they open without error messages and display correctly, the transfer was likely successful without file corruption.

Microsoft Office Security Issues