As for enabling it in GP, you might want to ask someone who uses Windows 8.1.įrom the above-linked ComputerWorld article: Still, I think Defender will stay blocked VIA Group Policy as long as any AV is installed on your system. If you really want to shut Avast down, you have to disable it’s self protection module VIA settings in the UI and then find the Avast processes in task manager and end task them. I really only use it for the real-time protection, though. I also had to go into group policy settings and manually turn Defender on because I was getting the same message you’re getting when I tried to enable it in services. It IS, however, completely gone with no ill effects. I had to manually remove registry entries and all Avast files with the help of a third party uninstaller (Revo) and CCleaner including it’s much maligned registry cleaner tool which worked wonderfully, but hope I never have to use such a thing as Revo again. It doesn’t seem to like to uninstall even if you use Avast’s uninstall tool which you have to download separately. All I have to say is good luck uninstalling it if you choose to try. I use Win7 圆4, but FWIW, I got rid of Avast about a month ago. Any other suggestions? Or will I be forced to uninstall AV? It would appear that Win 8.1 machines with an AV installed may have to simply hope for the best, ugh. When I did a search for msmpeng.exe in windows explorer things got more fun. Which I’m not willing to do at the moment. This makes me think that only uninstalling AV will make it show up. Then turn it back off and turn Avast back on. If Avast is off, you can turn on Defender and update. Under Security, there is a link to show the anti-virus programs installed and turn them on and off. If there is a choice (check box or the like) under settings, turn off Avast (and/or MB). Your anti-virus software turned off Defender, probably Avast. So I manually extracted MpSigStub.exe to the relevant location. Perhaps it’s because for some reason, MpSigStub.exe on my PC has a much higher version number (v10.x.x.xxxx.x) than the latest copy (v1.1.xxxxx.0) contained in the downloaded mpam-fe.exe package. The only unusual thing I observed is that although running mpam-fe.exe patches mpasbase.vdm, mpasdlta.vdm & mpengine.dll, it doesn’t patch MPSigStub.exe (located at C:\Windows\System32\). ![]() ![]() MPSigStub.exe => MS Malware Protection Engine Signature.mpengine.dll => MS Malware Protection Engine.Reason being that mpam-fe.exe contains the following files:. (Windows Update service is disabled 24/7 on my PC.) I manually downloaded & ran the latest Windows Defender malware definitions for Win 7 ( mpam-fe.exe) offline, & can also confirm that this does concurrently update the malware protection engine version as well. Specifically, I can confirm that the engine was updated on my main Win7, internet-facing, machine as part of the usual daily updates recently and I can confirm (by experiment) that the engine is updated in both Win7 (MSE) and Win10 (Defender) off-line machines if the “recent definitions” file mpam-fe.exe is downloaded from the MS site, transferred to the off-line machines via USB drive, and installed there. I cannot explain the contrary statement, unless it only refers to on-line Win10 Defender? I emphasise that my two off-line machines did get the new engine, apparently (merely) by running the current mpam-fe.exe file. To summarise: I didn’t take any special steps to get the new improved engine (5.2) but I did, successfully, find that it had arrived both on-line (on my main machine) and off-line (using file mpam-fe.exe to transfer to two off-line machines, one Win7 MSE, one Win10 Defender). Win7 Pro, MSE.Īll I can say is that a) I have Windows Update set to “never check” and I install updates by a scheme using your AKB2000003 “Group B” listings (my thanks again to you and MVPs) - so a new engine version shouldn’t get on to my machine via WU b) I usually update MSE on my main machine by manual update once or twice per day (to get thinking time, or to go for coffee) c) I suspect that delivery of a new engine version coincides with a change of the 2nd field of the definitions version (currently 259, was 257 before yesterday) - I keep a log of definition numbers but not of engine versions d) I imagine that a significant change in the engine might have to be synchronised with a corresponding reset of the definitions data or vice versa.
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