FAQs (Frequently Asked Questions)

Some users may see warnings from their anti-virus software when installing or running AntDM. These are known as false positive detections.

Modern anti-virus engines sometimes mistakenly flag legitimate software, especially download managers and tools that interact with network traffic or files. This does not necessarily mean the software is harmful.

We do not distribute malware. All releases of AntDM are built and published from trusted sources and are intended solely for legitimate use.

Before each release, we test our software using multiple anti-virus engines via services such as VirusTotal to ensure there are no widespread or consistent detections. If only isolated or inconsistent flags appear, the release is considered safe.

If you are unsure, you can always verify the file by downloading it only from our official website and checking it with multiple security tools.

What is Smart App Control?

Smart App Control (SAC) is a security feature in Windows 11. It protects your computer from malicious and potentially unwanted software. The feature is powered by Microsoft's cloud-based artificial intelligence.

Why does blocking occur?

SAC blocks files for two main reasons:

• Low reputation: The program is new, has few downloads, and the AI hasn't marked it as safe yet.
• Missing digital signature: The application code is not signed with an official developer certificate.

How does SAC differ from Windows Defender?

They operate at different levels of protection:

• Windows Defender looks for known malicious code. It blocks files only if it detects an actual virus.
• Smart App Control blocks files preventively. It stops programs from running simply because they are "unknown," even if they contain no viruses.

Is a certificate too expensive for a small project?

An official digital certificate (EV Code Signing) is expensive. For small, free projects or indie developers, these costs are often impractical. As a result, creators of useful utilities are frequently forced to release software without a signature.

How to disable or temporarily bypass Smart App Control?

If you fully trust the program, you can disable the protection in your settings:

• Open Settings (Win + I).
• Go to Privacy & security → Windows Security.
• Select App & browser control.
• Click on Smart App Control settings.
• Toggle the switch to Off.

Obtaining a digital signature certificate requires ongoing financial costs. Our project is small and independent, so we prefer to allocate resources to development and product support rather than expensive certificates.

In addition, we release updates 1–2 times per month. As a result, the reputation data in Microsoft SmartScreen does not have enough time to build up before new versions are released, which means Windows warning messages may still appear even if a digital signature is present.

We distribute our software exclusively through our official website, and all releases undergo internal checks before publication. If you downloaded the software from our website, you can be confident that it has not been modified by third parties.

DRM(Digital Rights Management) video protection is a new technology and all subscription sites are switching to it to protect their content.

DRM is a set of access control technologies for restricting the use of proprietary hardware and copyrighted works. DRM technologies try to control the use, modification, and distribution of copyrighted works (such as software and multimedia content), as well as systems within devices that enforce these policies.

Unfortunately, we do not support DRM protection (MPEG-DASH-DRM, M3U8-DRM protocols) now.

Both features perform the same task - they show the captured video for downloading.
The user relying on his own preference chooses a more convenient way to display the notification of the video file capture.

Technically, Video Button is always binded to the video frame of the web page and the browser tab. If for some reason the video frame cannot be found, the button appears in the upper right corner of the tab. There are rare cases that because of the complexity of building a dynamic web page can not identify the tab to which the video belongs. In this case, Video Button is not shown. Another complicated case where many short videos are played back in sequence in the same frame. These videos supersede each other and are not always easy to download.

Video Box does not have these disadvantages, because it is easier to build and it does not need to be bound to a specific frame and tab. Video Box allows you to capture a slightly larger number of video links then Video Button does.

You should clear settings Config\File Types\Automatically start downloading the following file types. After that, the files capture will not occur.

Turn off the video capture in the popup of our extension in borwser toolbar.

A VPN (Virtual Private Network) routes your internet traffic through a remote server, hiding your real IP address. Websites and services see the VPN server IP instead of your actual location.

There are browser VPNs (Extension) and system VPNs. A browser VPN works only inside a specific browser (Chrome, Edge, Firefox, etc). A system VPN works at the operating system level (for example, NordVPN, ExpressVPN, Surfshark, Proton VPN, etc) and routes all traffic through the VPN.

We strongly recommend using system VPNs

Learn more Working Under VPN

If you see the message "Sign in to confirm you're not a bot", "HTTP429 Too Many Requests", it means that the server has temporarily blocked your IP address due to automated requests. This usually happens when too many download requests are detected in a short period of time or you may be using a VPN with a very popular IP address.

In most cases, this is a temporary restriction. Access is typically restored within a few hours. The block is rarely permanent.

How to fix this issue

You can resolve this problem by either waiting or changing your IP address.

Ways to change your IP address:

• Use a system-level VPN (strongly recommended)

  Using a browser VPN does not help, since the download request is performed by the application using your system connection. This ensures that all applications, including Ant Download Manager, use the same IP address

  Learn more Working Under VPN

• Restart your router

  If your ISP uses dynamic IP (DHCP), a reconnect may assign a new IP address

• Reconnect your internet connection

  (disable/enable network adapter or reconnect PPPoE session)

• Contact your Internet provider

  Some providers can assign a new IP address on request

• Use a different network

  For example, switch to mobile internet or another Wi-Fi network

In some cases, streaming video may download successfully, but an error occurs during the merging or conversion stage.

One of the most common reasons is that one of the streams is encrypted.

During the download process:

• Ant Download Manager retrieves video and audio streams
• However, it may not always detect whether a stream is encrypted

When the merging (conversion) process starts:

• The processing module attempts to combine audio and video
• If one of the streams is encrypted or not fully compatible
• It cannot be decoded correctly

As a result, you may see an FFmpeg-related error during merging.

This issue is typically caused by encrypted or incompatible media streams and is related to how the source delivers streaming content, not a malfunction of Ant Download Manager itself.

This error occurs because your current FFmpeg binary was compiled without support for the libx264 library due to licensing and patent restrictions:.

• License Conflict: FFmpeg defaults to the LGPL license, while libx264 is strictly GPL. To avoid forcing the entire project under the restrictive GPL license, official builds exclude it by default.
• Patent Risks: H.264 technology is patent-protected. Distributing pre-compiled binaries with this codec requires royalty payments, creating legal risks for distributors in regions like the US and EU.

We ask that you please provide a reason for the return so we can further improve our products. If our support team has not been able to resolve your issue or if you are not satisfied with our product or support, simply contact us [email protected] within 30 days of purchase and we will refund your money.

More about our Warranty and Refund Policy see Our Policy.