Security at glance for Virus & Threat Protection missing

Hi Safiey,

Sorry to hear that the modification to "highrange" had no effect on your problem.

That particular Key is what sets UILockdown to either 0show or 1 hide, for Virus & Threat

Protection.

If you examine the Registry at this location, you can see UILockdown.

*Hkey_Local_Machine\Software\Microsoft\Windows Defender* and select UXConfiguration.

If you find UILockdown with a Dword = 1, that is going to hide the option.

In case this condition was present, and not reset, after you modified "highrange", you should

reset it now. You cannot modify it in UXConfiguration.

It has to be modified by using Windows PowerShell (Admin).  Right click "Start" and select

PowerShell (Admin).  On the PowerShell screen, type the following cmdlet, followed by <enter>

Set-MpPreference -UILockdown 0     <enter>

Exit     <enter>

Right now, before you restart you PC, you should be able to see the "Virus & Threat Protection"

option. And UXConfiguration contains UILockdown with Dword = 0.

Restart your PC, and check for the option again. If the option is still present, you should be

finished. If it is not present, the Policy is bypassing the "highrange" modification somehow.

In that case, see step 2 in this link, and see if you find the possible cause for this Policy to run.

Step 2 examines the Task Scheduler for a particular task, discovered by OP Andy up North.

It describes what he found to be the cause for his experience with this Policy.

https://answers.microsoft.com/en-us/protect/forum/all/virus-threat-protection-is-missing-in-windows/eb3e047c-35e7-4eab-9382-117340e758fb

Good luck,  Glen

The subkey for the highrange was already change to 0  and Im pretty sure this thing will happened again and again because even after the highrange subkey was already change to 0, AllowUserUIAccess key will always change it back automatically to 0  for no reasons. I will keep this post update whenever its happen again

Hi Safiey,

If you modify the AllowUserUIAccess Dword value, at that location, the result will be what

you are experiencing.  Because, when the Policy is implemented again, it changes that Dword

and the Policy is allowed to execute again. 

The modification to the Registry that you should make is this..

Open the Registry "As an Administrator" and navigate to this location.

Hkey_Local_Machine\Software\Microsoft\Policy Manager\Default and expand Defender.

In the list of policies, find AllowUserUIAccess and select it.  This displays the Registry Key that

is used to Hide or Show the Virus & Threat Protection option. You should "modify" the Dword

value for the sub-key highrange from 1 to 0. This modification will then only allow this Key to

Show the option. And, when the policy is implemented again, it cannot change this Dword, and

the attempt to Hide Virus & Threat Protection is prevented.

The Policy that is causing your problem, is one that is designed only for use in an Enterprise

environment. It prevents End Point users from changing Defender's settings. It is not known

how it gets implemented on your Home PC. That is the reason for just nullifying its effect.

Since it should never be appropriate for use on your PC, anyway.

Any questions, please reply.

Good luck,  Glen