Windows defender permision

Anonymous

Your IT administrator has limited access to some areas of this app,and the item you tried to access is not available . Contact IT helpdesk for more information.

this is the message I get when I try to scan a drive using windows defender(right click and scan using windows defender option).

windows specification:

edition:windows 10 home

version:1803

os build:17134.48

device specification:

hp envy x 360 convertible

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Anonymous

Hi Michael,

I believe that your IT department is right.

It is probable that the problem in v1803 is associated with the "Periodic Scanning"

button. Please see my posts in this thread for August 27 and 28.

I think there is a fault in v1803, that leaves only some PCs without a functioning

periodic scanning button.

In other threads, some have had this same problem, and their button was turned on.

Yet, when they uninstalled their third party anti-virus, there problem was corrected.

A functioning periodic scanning button allows Windows Defender to work in concert

with third party anti-virus programs.

EDIT:

I did not have this link in hand when I first replied to your post.

This link is my case in point.

Andrew had the same problem, that was originally expressed in this thread.

He had also been successfully running a third party security program, in concert with

Windows Defender, until W10 v1803 was installed. And his periodic scanning button

was turned "ON".

https://answers.microsoft.com/en-us/protect/forum/all/why-is-scan-with-windows-defender-blocked-by-it-on/33f9ab1b-673d-4eb9-8119-ce0d92a2cd83#

Pay particular attention to the second page of his thread.

Regards, Glen

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64 additional answers

Anonymous

2018-08-05T10:01:47+00:00
To follow up on this, I had to get my HDD sent into an IT firm to recover it. There were some bad sectors.

Now that I can boot into my OS again, this issue is still present.

I'm considering a fresh install of windows 10 but I'm skeptical if this will resolve the issue as I've found this thread:

https://answers.microsoft.com/en-us/windows/forum/windows\_10-files/controlled-folder-access-windows-10-home/101aa23a-9065-4022-9324-f1dad690aa7c
- Side issue -
It should be noted that Google Chrome cannot download anything now, but Firefox can.

Chrome will complain that a virus scan could not be completed.

I've adjusted the Internet Properties settings, and ensured the registry is as described in this article with no improvement in Chrome: https://support.microsoft.com/en-sg/help/883260/information-about-the-attachment-manager-in-microsoft-windows

I'm going to try installing Kaspersky to see if this has any effect.
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Anonymous

2018-08-01T15:18:52+00:00

Hi Charles, And Others....

Would you perform a simple test to see if you have a conflict between your

third party anti-virus and Windows Defender. Go to the "Virus & threat protection"

screen, in Windows Defender, and scroll to the bottom of the screen. If you see

a "periodic scanning" button, it must be set to on in order for Windows Defender

to function.

When a third party security program is installed, Windows Defender deactivates.

The button being set to on, allows Windows Defender to function in "passive"

mode. It can be used for scanning, but it does not supply online protection.

If the button is off, Windows Defender does not function, and reacts much like

you describe.

Regards, Glen

Thank you for your kind help.

Unfortunately the overarching issue is that we simply do not have any access to "Virus & threat protection". Instead we are blocked with the following message didplayed. This is a stand-alone PC, there is no "IT administrator" or "IT helpdesk" to appeal to. In my case I have "Norton Security" installed.

Thanks again for your input.
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Anonymous

2018-08-01T09:05:10+00:00

Hi Charles, And Others....

Would you perform a simple test to see if you have a conflict between your

third party anti-virus and Windows Defender. Go to the "Virus & threat protection"

screen, in Windows Defender, and scroll to the bottom of the screen. If you see

a "periodic scanning" button, it must be set to on in order for Windows Defender

to function.

When a third party security program is installed, Windows Defender deactivates.

The button being set to on, allows Windows Defender to function in "passive"

mode. It can be used for scanning, but it does not supply online protection.

If the button is off, Windows Defender does not function, and reacts much like

you describe.

Regards, Glen

Glen, the consensus is that there was another anti-virus installed but we can't delete it with the Avira removal tool.

Windows Defender reacts just like we describe and there seems to be no solution except manual tweaks. Most of which I personally tried already.
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Anonymous

2018-08-01T08:29:16+00:00

Hi Charles, And Others....

Would you perform a simple test to see if you have a conflict between your

third party anti-virus and Windows Defender. Go to the "Virus & threat protection"

screen, in Windows Defender, and scroll to the bottom of the screen. If you see

a "periodic scanning" button, it must be set to on in order for Windows Defender

to function.

When a third party security program is installed, Windows Defender deactivates.

The button being set to on, allows Windows Defender to function in "passive"

mode. It can be used for scanning, but it does not supply online protection.

If the button is off, Windows Defender does not function, and reacts much like

you describe.

Regards, Glen
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