Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Microsoft Security Essentials will not allow access to NAS drive

22 Dec 2013   #1

Windows 7
Microsoft Security Essentials will not allow access to NAS drive

My PC is running Windows 7 professional.

I have a DNS-323 NAS enclosure

Until recently, this set up has been working fine.
From last week I can no longer access the DNS-323 through Windows explorer. My backup software also cannot see the drives.
I can however successfully ping the DNS-323 and access the DNS-323 software via my browser
The DNS-323 is configured with a static IP address

If I disable Microsoft Security Essentials, I can access the DNS-323 through Windows explorer. My backup software can also see the drives.

How do I configure Microsoft Security Essentials to always allow access to the DNS-323?

Thanks in advance

My System SpecsSystem Spec
22 Dec 2013   #2

Windows 7 Home Premium


Please try the following...

Open Microsoft Security Essentials (MSE)
Uncheck: Real Time Protection
Click: Save changes

Use the Search Utility provided by the DNS-323 NAS to map the drive.

Now, open MSE and check to turn on: Real Time Protection
Click: Save changes

Can you now access the DNS-323 NAS?

If no-go, let's check the Maximum Transmission Unit (MTU) size of your Wireless Network Connection.

Please do the following:

Go to Start > All Programs > Accessories > Command Prompt
At the Command Prompt, copy/paste the following text inside the code box, and press: Enter

netsh interface ipv4 show subinterfaces
To copy the text contained/produced by the Command Prompt, click on the small command icon in the top left corner, and then choose:
Edit > Select All
Once again, Edit > Copy

Now,open Notepad, and paste the text to it.

Please post the text in your reply.

To close the Command Prompt, use the [X], or type in: exit Press: Enter
My System SpecsSystem Spec

 Microsoft Security Essentials will not allow access to NAS drive

Thread Tools

Similar help and support threads
Thread Forum
AVG 9 Internet Security v Microsoft Security Essentials
Which is better? I have AVG 9 til 2018, full version, but I'm considering MSE. Which is better? Which do you use?
System Security
Microsoft Security Essentials filling my C: Drive
I installed new windows 7, make C: drive 40 GB, install some softwares and Microsoft Security Essentials. but the system had some viruses due to early internet usage. so i scan the system. but after scanning Microsoft Security Essentials keeps on cleaning viruses from 2 days and it is continuously...
System Security
Is Microsoft Security Essentials and Windows Firewall enough Security?
Is the above enough security or should I be going for an anti-virus program as well?
System Security

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 14:44.
Twitter Facebook Google+