You are here

MS Defender False Positive? PortableApps.com Platform Setup 30.1 blocked for PUATorrent:Win32/QBitTorrent

11 posts / 0 new
Last post
Dr.No
Dr.No's picture
Offline
Last seen: 14 hours 59 min ago
Joined: 2025-09-29 02:15
MS Defender False Positive? PortableApps.com Platform Setup 30.1 blocked for PUATorrent:Win32/QBitTorrent

On trying to update PortableApps.com_Platform from installed VERSION 30.0.4 Microsoft Defender Antivirus detects

PUATorrent:Win32/QBitTorrent,
see at https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-descri....

Both setup executables

* PortableApps.com_Platform_Setup_30.1.paf.exe
* PortableApps.com_Platform_Setup_30.1_UpdateFrom_30.0.2_OrLater_ONLY.paf.exe

are blocked on Download, so Installation / Upgrade is not possible.

Is this a false positive?
Or is PortableApps.com_Platform really infected/equipped with QBitTorrent feature?

John T. Haller
John T. Haller's picture
Online
Last seen: 2 min 37 sec ago
AdminDeveloperModeratorTranslator
Joined: 2005-11-28 22:21
Try Again

Looks like this may have been a short term false positive. I'm not seeing it now.

Sometimes, the impossible can become possible, if you're awesome!

Dr.No
Dr.No's picture
Offline
Last seen: 14 hours 59 min ago
Joined: 2025-09-29 02:15
OK, i will give it some more

OK, i will give it some more tries

tbirk404
Offline
Last seen: 1 day 8 hours ago
Joined: 2023-04-11 09:27
Can Confirm - Download Blocked

I'm experiencing the same with Microsoft Defender blocking the download attempted by the updater as well as a direct download of the latest version, per the recommendation in https://portableapps.com/supprt/platform#manualupdate. Download detected as being/containing QBitTorrent.
Initial attempt to download was around 8:20 AM GMT-4, 9/29/2025. Attempted multiple times at various times in various manors (different browsers, attempting (and failing) to tell MS Defender the file is fine and to just continue, etc.) up until around 9:30 AM. All downloads blocked.

System: Windows 11 Enterprise v24H2 (build 26100.4946)
Attempted manual downloads via latest version of Microsoft Edge and Google Chrome.

Dr.No
Dr.No's picture
Offline
Last seen: 14 hours 59 min ago
Joined: 2025-09-29 02:15
Same Windows 11 Enterprise Version

Reading through the comments, the false detection is possibly due to the Enterprise OS Version:

Mine is also Windows 11 Enterprise v24H2 (build 26100.4946)

where some antivirus settings are controlled by the Domain and out of my reach.
The Security intelligence version is 1.437.214.0 and virus definitions updated @ 30.09.2025

John T. Haller
John T. Haller's picture
Online
Last seen: 2 min 37 sec ago
AdminDeveloperModeratorTranslator
Joined: 2005-11-28 22:21
Reported

I've reported the issue to Microsoft with both files for Enterprise users

Sometimes, the impossible can become possible, if you're awesome!

Dr.No
Dr.No's picture
Offline
Last seen: 14 hours 59 min ago
Joined: 2025-09-29 02:15
Great, thanks

Great, thanks

John T. Haller
John T. Haller's picture
Online
Last seen: 2 min 37 sec ago
AdminDeveloperModeratorTranslator
Joined: 2005-11-28 22:21
Try Again?

Please try it again now. Microsoft confirmed there are no issues with either file.

Sometimes, the impossible can become possible, if you're awesome!

unimportable
Offline
Last seen: 5 hours 54 min ago
Joined: 2025-09-29 05:32
Same problem here just now

Not able to update as the installer is detected as a 'potentially unwanted app' and removed.

bmmp
Offline
Last seen: 1 day 11 hours ago
Joined: 2025-09-29 06:43
same here - none of the

same here - none of the downloads working - even cannot compare the hash..

John T. Haller
John T. Haller's picture
Online
Last seen: 2 min 37 sec ago
AdminDeveloperModeratorTranslator
Joined: 2005-11-28 22:21
Clean, Update Your Definitions

It shows as clean in VirusTotal in everything including Defender: https://www.virustotal.com/gui/file/452d481bfa25a46bb1e5eb8f63a4c6557d6d...

I just updated from 30.0.4 to 30.1 without issue on a fully up to date install of Windows 11 with Security intelligence version 1.437.212.0 and virus definitions updated to 9/9/2025 8:12AM. Scanning with this version of Windows Security shows no issues with the 30.1 installer or the update package.

Please update your definitions to the latest version.

Sometimes, the impossible can become possible, if you're awesome!

Log in or register to post comments