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Windows Defender definition update failed: Windows 7 64bit

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Fresh install Windows 7 64bit. Windows updated EVERYTHING, fails on 1 update. "Windows Defender definition update".
I searched both codes.. I have tried for about 10 hrs... 2 hrs on the phone with 1800 MICROJOKE er.. MICROSOFT. Seems this stumped there "Level 1 technicians" ( so they call themselves).
I know I can manually update Windows Defender getting the latest version of there definitions manually... from here: https://www.microsoft.com/en-us/wdsi/definitions
but that gives me a version HIGHER then what Windows updates is giving me... and I did this last night.
When I do update manually, (to a higher version then windows update offers) the error codes both disappear.. BUT, I know the link above had about 10 different updates since my 'manual' update.. and Windows Defender is not catching them.
I don't know if "when" windows updates will 'catch up' to the latest version, (Higher then the manual one I CAN install in my Windows Defender) that it (windows updates) will offer a definition update at all.

I have a feeling manually installing is the only way to do this, why? What is broken now? I never had an issue to update anything before.

I installed windows TWICE now thinking in my 'twinking' I turned something off I shouldn't have.
I know I can CMD in and erase the definitions manually, then I get the errors again.
Code:
cd %ProgramFiles%\Windows Defender
MpCmdRun.exe -removedefinitions -dynamicsignatures
MpCmdRun.exe -SignatureUpdate
I just don't know if manually installing a definition will future proof the issue at hand. Will it accept another definition?

123350
 
Last edited:

Solaris17

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have you fully patched this system?

EDIT:: nvm im an idiot. Have you installed .net?
 
Joined
Apr 9, 2019
Messages
74 (0.94/day)
System Name Custom Build
Processor AMD FX(tm)-8350 (Water cooled) Stock not OC'd
Motherboard ASUS M5A99FX Pro R2.0
Cooling Water 240 rad
Memory Corsair Vengeance 8 GB.
Video Card(s) Nvidia (to old to proudly mention) - water cooled
Storage 120 GB SATA 3 SSD Inland Professional (piece of crap) + 80 GB Intel SSD SATA 2
Display(s) Samsung NU710D 50" TV
Case ANTEC 200 V2 (Custom cut for Plexi window, H20, and 140 front fans)
Audio Device(s) Varies
Power Supply Corsair TX650
Mouse Logitech M325
Keyboard Microsoft Curve 2000
Software Windows 7/10
have you fully patched this system?

EDIT:: nvm im an idiot. Have you installed .net?
Thank you for your reply! I appreciate it

Microsoft NET Framework 4.7.2? installed.

Might be these unchecked (Pict below)?

123376


EDIT! I clicked both boxes, tried windows update, FAIL!

Then I decided to try to find an older Windows Defender Definitions update. I found a Version 1.293.1564. Windows update is trying to install Version 1.293.1899 (That failed).
I updated to 1564, and ran Windows update once again.... and Windows update installed 1899!!

It worked!

Before when I was manually updating, I was trying 1985 which is above 1899.

Anyway, it seems fixed.

Just weird!
I guess you have to do a lower version manual (when bugged) then do Windows Update.
123377


4 hrs of 1800-MICROSOFT and they couldn't figure it out.
 
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