Security Policy Errors

How to Fix Avast Blocking ZIP File Downloads from OneDrive

Adam Davis Oct 1, 2026 870 views

Question details

Users are unable to download ZIP files from OneDrive because Avast antivirus incorrectly identifies the OneDrive domain as a blacklist threat.

How to Fix Avast Blocking ZIP File Downloads from OneDrive

Product: Avast Antivirus, Microsoft OneDrive
Device & OS: not provided
Scenario: Downloading compressed ZIP folders from OneDrive cloud storage.
Observed behavior: Avast intercepts and blocks the download, flagging the clean OneDrive domain or the downloaded ZIP file as a security threat.

Before you start

Verify that the ZIP file you are attempting to download is from a trusted source and does not contain actual malware before altering any security settings.

Solution 1Recommended

Update Avast Virus Definitions and Check for False Positives

Keeping Avast updated ensures you have the latest false-positive corrections. Reporting the block helps Avast clear the OneDrive domain.

Avast frequently updates its threat database. An outdated database might contain an incorrect blacklist entry for OneDrive that has already been resolved by Avast's security team.

Update Avast Definitions

Open your Avast Antivirus application. Go to Menu > Settings > General > Update, and click 'Check for updates' under the Virus definitions section.

Review Detection Details

Navigate to the Protection tab and open the Virus Chest or Quarantine to view the exact detection details for the blocked OneDrive download.

Report a False Positive

If you are certain the file is clean, right-click the blocked item in the Virus Chest and select 'Report as false positive'. Submit the details to Avast Support.

Update Avast Virus Definitions and Check for False Positives

Do Not Disable Antivirus: Avoid completely disabling your antivirus protection to bypass the download, as this leaves your system vulnerable to real threats.

Solution 2

Add an Exception or Change DNS Settings

If the domain remains blocked after an update, adding a specific exception or switching to a reputable DNS service can restore access.

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Frequently Asked Questions

Why is Avast flagging OneDrive as a threat?

Antivirus software relies on domain reputation. If other users previously hosted malware on public OneDrive links, Avast may temporarily blacklist the domain, resulting in a false positive for clean files.

Is it safe to temporarily disable Avast to download my ZIP file?

It is not recommended. Disabling your antivirus exposes your computer to potential threats. Instead, update your virus definitions or add a specific exception for the trusted OneDrive URL.

How can I verify if the ZIP file is genuinely safe?

If you did not create the file yourself, you can download it on a different device or upload the URL to an online malware scanner like VirusTotal to verify its safety before opening.

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