IE10 proxy settings don't get applied on a windows 7 PC, but gets applied on IE9

Hi

We had Windows 2008  and recently we migrated from windows 2008 to Windows 2012.We have 300 XP PCs in our school and  we will be migrating all PCs to windows 7.

I had installed Windows7 on PC and tested to make sure if every thing works fine.
I noticed that  when windows 7 is on IE 9 , the internet works fine  perfectly and picks up different proxy settings as per the user.

Staff: Staffproxy.domain.local (medium restricted)
Student: Studentproxy.domain.local (less restricted)
Administrator: adminproxy.domain.local (Bypass proxy access)

But after running  windows updates on this PC IE10 was installed.
Now when I open the IE10 the  proxy settings don't get applied and the web page cannot be displayed. I don't know how the proxy needs to be setup for IE10 users.

Any help to trouble shoot and sort this much appreciated.
lianne143Asked:
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strivoliCommented:
The proxy is most likely set by means of a GPO. You should create another GPO that uses the IE10 Administrative Template.
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lianne143Author Commented:
Please can you post some tutorials.
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strivoliCommented:
a. You have only 2012 DCs?
b. How many servers do you have? 1?
c. Which IE version is running on the DCs?

Please respond and I'll give you more details. Thanks.
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Manjunath SulladTechnical ConsultantCommented:
Hi,

I believe you need to modify below registry path,

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet

Have a look below thread.
http://community.spiceworks.com/topic/342202-ie-10-group-policy-help-needed-i-think-i-ve-found-a-bug
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lianne143Author Commented:
Yes that's right, we have a Primary DC and a Secondary DC which runs on a Windows 2012.

We have 2003  and 2008  servers in the network, we are planning to upgrade these servers to windows 2012.

On Windows 2012 servers (DCs) , the explorer version is 11
On Windows 2008 servers-File server, the explorer version is 10
On Windows 2003 servers- File server, the explorer version is 8
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strivoliCommented:
Are you sure about IE11 on Win2012?
You have either Win2012R2 (not Win2012) or Win2012+IE10 (not IE11). Please check and report back. Thanks.
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strivoliCommented:
Beside the Win and IE version (see previous post), your best bet in order to manage the GPOs is adding the "Group Policy Management" Feature.
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