Windows 10: Microsoft Defender Offline STILL aborts at around 91% - after a REINSTALL of Windows 10...

I've had the problem of Windows Defender Offline never completing for many years, but never found out why.


The best information I ever found was the observations and discussions by @GlenProuty and @bhringer on the 28 July 2019 Windows Defender Offline crashing during scan? topic, especially GlenProuty's 11 Aug 2019 post and bhringer's 13 Aug 2019 response to it, both onpage 4 of that topic.


Recently I had an HDD crash, so I replaced it with a spare unformatted HDD and did a clean offline reinstall of Windows 10 Version 2004.


After the reinstall completed I created a local non-admin user account, connected to the internet, checked for Windows Updates, installed them, rebooted the computer, and repeated a few times until it was up to date.


The very next thing I did was to run Microsoft Defender Offline. Twice.


The first run started at 23.13, and aborted at 23.18 with the status bar showing 91% and 51,974 files scanned I was video recording it specifically to catch the file count when it aborted.


The second scan started23.38, I didn't note the time that it aborted although it was a similar duration with the status bar again showing 91%, but the file count being 51,878 once again captured on a video recording.


I took a look at the logs in C:\Windows\Microsoft Antimalware\Support\. The MPDetection log contained just this - note the "Service stopped with exit code 0x0", which as GlenProty mentioned in that 11 Aug postprobably indicates that everything completed without any errors:


2020-08-15T23:13:30.700Z Service started - Microsoft Antimalware F7F4CD20-7371-4319-B1DB-6FCFC68573EC

2020-08-15T23:13:44.466Z Version: Product 4.18.1907.16384 Service 4.18.1909.6 Engine 1.1.17300.4 AS 1.321.1465.0 AV 1.321.1465.0

2020-08-15T23:13:44.481Z Version: Product 4.18.1907.16384 Service 4.18.1909.6 Engine 1.1.17300.4 AS 1.321.1465.0 AV 1.321.1465.0

2020-08-15T23:18:48.916Z Service stopped with exit code 0x0

2020-08-15T23:37:16.634Z Service started - Microsoft Antimalware F7F4CD20-7371-4319-B1DB-6FCFC68573EC

2020-08-15T23:37:16.806Z Version: Product 4.18.1907.16384 Service 4.18.1909.6 Engine 0.0.0.0 AS 0.0.0.0 AV 0.0.0.0

2020-08-15T23:38:20.070Z Version: Product 4.18.1907.16384 Service 4.18.1909.6 Engine 1.1.17300.4 AS 1.321.1465.0 AV 1.321.1465.0

2020-08-15T23:43:22.989Z Service stopped with exit code 0x0


However, the MPLog log shows distinctly different results from the two scans:


--------------------------------------------------------------------------------

Microsoft Antimalware F7F4CD20-7371-4319-B1DB-6FCFC68573EC Service Log

Started On 08-15-2020 23:13:30

************************************************************

OS install time not retrieved: hr = 0x8007000d

Current time: 08/15/2020 23:13:30.704482800 UTC 21734 ms since boot


...many lines here


Engine:

2020-08-15T23:17:53.777Z Triggered AR EMS scan

lots of other stuff here

2020-08-15T23:18:47.406Z [Cloud] Engine is requesting config to do cloud query [regular network].

2020-08-15T23:18:47.490Z Service stop requested ServiceError: 0x0. Calling CleanupMpService ...

2020-08-15T23:18:47.505Z On demand scan closed without completion. Current scan state: 1. ScanSource: 7, Scan flags:0x10050004. NumberOfResources:40. bRemoveFromList:1

2020-08-15T23:18:48.916Z Unloaded module#0 MpComServer.

Microsoft Antimalware F7F4CD20-7371-4319-B1DB-6FCFC68573EC Log

Stopped On 08-15-2020 23:18:48 Exit Code = 0x0

************************************************************

--------------------------------------------------------------------------------

Microsoft Antimalware F7F4CD20-7371-4319-B1DB-6FCFC68573EC Service Log

Started On 08-15-2020 23:37:16

************************************************************

OS install time not retrieved: hr = 0x8007000d

Current time: 08/15/2020 23:37:16.641899000 UTC 17671 ms since boot


...many lines here


Engine:

2020-08-15T23:42:30.546Z Triggered AR EMS scan


Internal signature match:subtype=Lowfi, sigseq=0x0000157ED937801E, sigsha=bbbf26686b9c7bff3b13408af6504c1c459b6e84, cached=false, source=0, resource="\\?\D:\ProgramData\Microsoft\Windows Defender\platform\4.18.2007.8-0\X86\MpOav.dll"

2020-08-15T23:43:22.746Z Service stop requested ServiceError: 0x0. Calling CleanupMpService ...

2020-08-15T23:43:22.989Z Unloaded module#0 MpComServer.

Microsoft Antimalware F7F4CD20-7371-4319-B1DB-6FCFC68573EC Log

Stopped On 08-15-2020 23:43:22 Exit Code = 0x0

************************************************************



So is Microsoft Defender Offline actually working, or is it not ?

:)

 

Microsoft enables offline play for Windows 10 games

Most Windows 10 games will support offline play, but you'll have to work at it.





"Larry Hryb, the man known to the world as Major Nelson, announced on Twittertoday that Microsoft has "made some backend updates to improve your experience playing @Windows 10 games offline." Basically, if you're going to be somewhere that lacks online coverage—on a submarine, for instance—it will still be possible to play your games. But there are some restrictions.

"Most games available in the Store on your Windows 10 device support offline play, but check the details of the game to make sure yours is supported by searching for your game at http://www.xbox.com," the Xbox support site says. "Most games with a campaign mode will be playable offline, but games with network co-op or multiplayer features will not work while you’re offline. While playing offline, some features, such as the ability to purchase additional items from the Windows Store, will not be available. Additionally, any leaderboards will be unavailable while you're offline."

Obviously, online features like buying stuff from in-game stores won't be available when you're offline, but the bit about "games with network co-op or multplayer features" not working while offline really isn't clear. We tested with Gears of War 4 and confirmed that the offline features like campaign and LAN multiplayer worked just fine when disconnected.

There are more caveats, though. You're limited to just one "designated offline device" at a time, and you can only change your designated offline device three times per year. Switching into offline mode isn't all that easy, either. First, you'll need to set your designated offline device:

• Make sure that you’re online.
• Check that your device has the latest Windows updates: Go to Start,Settings, Update and security, and then Windows Update and see if any relevant updates are available.
• Open the Store. You’ll be prompted to sign in if you haven’t already.
• Select the Me icon (this is your profile picture).
• Select Settings, and then under Offline Permissions, make sure that the toggle is set to On.

After that, you'll have to "prepare" your games by launching each one that you want to play offline while you're still online, and logging into your Xbox Live account. This is a bit like launching Steam into Offline mode while you still have an internet connection... but you'll have to prepare each individual Xbox game this way before going offline.

Once you've logged into the game while you're online, you can exit at any time and you'll be set. Of course, if you change your mind and want to play something you haven't properly prepared, you're out of luck.

The upside is that this only affects Windows 10 games, but it still seems wildly complicated and restrictive to me. Worse, while improved functionality is always welcome, I can't see how this does anything but beg for unflattering comparisons with Steam: When I want to play my Steam games offline, I set Steam offline, restart it, and I'm on my way—and I can do it as often as I want. Microsoft's implementation of offline play is an improvement, but only because it wasn't available at all previously. As a step toward becoming more competitive with Steam, though, it falls woefully short."

Microsoft enables offline play for Windows 10 games | PC Gamer

 

Windows Defender Offline for Windows 10

Tried this suggestion and it did not work. Tried to boot from USB with Windows Defender Offline transferred from a safe computer. Would not boot from USB. Message "Secure Boot Violation, Invalid Signature Detected, Check secure boot policy in Setup"
Any suggestions on next steps for a Windows 10 compatible version of Windows Defender Offline?

 

Is it possible to create a Windows Defender Offline Scan boot disk for Windows 10?

Thank you for your reply to my question. Please note, however, that I asked about a solution for Windows 10.

The following indicates that the solution that you directed me to, is not for Windows 10 (and did not work for Windows 10):

Using Windows Defender Offline on Windows 7 and Windows 8.1

If you're using Windows Defender Offline on Windows 7 or Windows 8.1, you need to follow four basic steps:

1. Download Windows Defender Offline and create a CD, DVD, or USB flash drive.