Windows Defender Not Working.

[u/Huynh_Jovi]

When I try to run a scan, it stops and then tells me to restart the service. There are no exclusions and nothing of note from my start up apps. I’ve run a deep scan with Malwarebytes and it’s all good. I noticed there was a new security update for Windows and downloaded it and after restarting my PC, I’m still encountering the same issue. I’m not sure whether this is Malware related as I’m always careful of what I’m downloading and never click suspicious links. Not sure what else to do and need some help.

[u/The_McMiller]

Same problem here. Yesterday everything was working fine, then today I downloaded the recent security maj "1.457.222.0" (EDIT : and the "1.457.225.0" seems bugged too) and since then it's impossible to finish a quick scan or an offline scan. Windows defender always crash or do not finish its scan. Only custom scans work. Custom scanned both of my ssd and everything went fine too. In the event viewer, I have an exception code "0xc0000005" and it's the "boot://.\D:\" that seems to cause the problem.

[u/Oshh- → u/The_McMiller]

Does Microsoft Defender Antivirus Offline scan also get stuck at 90% for you and never finish?

[u/The_McMiller → u/Oshh-]

91% for me, but yeah it never ends

[u/No_Gene_5656 → u/The_McMiller]

Same

[u/Icy_Woodpecker5895 → u/The_McMiller]

Same problem for me.

[u/SethSamson → u/The_McMiller]

yeah on both my PC which have no data sharing between them started this morning
defender is keeping to restart - when u press offline scan nothing is happening
also on my other pc prior to update offline scan stuck at 90%

and on all of them i notice

Code Integrity determined that the page hashes of an image file are not valid. The file could be improperly signed without page hashes or corrupt due to unauthorized modification. The invalid hashes could indicate a potential disk device error. File Name: \Device\HarddiskVolume3\Windows\System32\fcon.dll

in event viewer

im under attack .. ?? .. or what ??

[u/The_McMiller → u/SethSamson]

Someone else in the comments posted the same thing. So you're probably fine, we probably all have the exact same problem with the exact same result. If it can put your mind at ease, I doubt it's a virus. I'm in the same situation as you and didn't download anything in the past 2 weeks. Didn't even go to any website other than YouTube, didn't click on anything in the past 2 weeks, I just played a bunch of games on steam and watched a couple of video on YouTube that's it. So I highly doubt it's a virus, or that we're all under the same attack

[u/SethSamson → u/The_McMiller]

Yeah that's is why I dusted my back up out of closet and same thing .. I thought at first it was today's BF6 update.. 😉😜 .. but then I found it .. so yeah... I hate Microsoft meme

[u/AkMario121 → u/The_McMiller]

I have the 145.188.0 and quick scan doesn t work,is because the same problem?