Q: I've just formatted my windows 7 64bit machine  and I re-installed iTunes 11.0.1, I tried to sign-in using my Apple-ID but it always gives an error 'The iTunes store is temporary unavailable. Please try again later' Please Help !!

I've tried everthing given over there, downloaded iTunes latest version. I switched off my Antivirus as well as Firewall while downloading and installing the Software from the scratch. I even retried by removing all the Apple softwares from my system using CCLEANER, in which I also cleared the Registry and cleaned up the files which were not usable regarding Apple Softwares. So "IIIaass " could you be more specific of what I should do. Because it's quite frustrating as it's been 4 days that I;m trying to solve this issue. 

Yes I connect to the iTunes Store but I can't sign into it. And I ran the Diagnostics test from iTunes, it shows a failure for 'Secure Link to iTunes Store Failed.' tried to follow the HELP link given there but didn't work for me. I would appreciate if you'd know something about this.

This is the iTunes Diagnostic Report That had been generated, but I hadn't connected my iPod Touch to it but I guess the device is not giving any problem.

Microsoft Windows 7 x64 Home Premium Edition Service Pack 1 (Build 7601)

Sony Corporation VGN-NW225F

iTunes 11.1.1.11

QuickTime not available

FairPlay 2.5.16

Apple Application Support 2.3.6

iPod Updater Library 11.1f5

CD Driver 2.2.3.0

CD Driver DLL 2.1.3.1

Apple Mobile Device 7.0.0.117

Apple Mobile Device Driver 1.64.0.0

Bonjour 3.0.0.10 (333.10)

Gracenote SDK 1.9.6.502

Gracenote MusicID 1.9.6.115

Gracenote Submit 1.9.6.143

Gracenote DSP 1.9.6.45

iTunes Serial Number 0036BCE80A4B11B0

Current user is an administrator.

The current local date and time is 2013-10-06 02:04:25.

iTunes is not running in safe mode.

WebKit accelerated compositing is enabled.

HDCP is supported.

Core Media is supported.

Video Display Information

Intel Corporation, Mobile Intel(R) 4 Series Express Chipset Family

Intel Corporation, Mobile Intel(R) 4 Series Express Chipset Family

**** External Plug-ins Information ****

No external plug-ins installed.

**** Network Connectivity Tests ****

Network Adapter Information

Adapter Name:        {12A6B503-5D6E-4C9D-9E63-F4DD82122E2B}

Description:            Atheros AR9285 Wireless Network Adapter

IP Address:             *.*.*.*

Subnet Mask:          255.255.255.0

Default Gateway:    192.168.2.1

DHCP Enabled:      Yes

DHCP Server:         192.168.2.1

Lease Obtained:     Sun Oct 06 01:28:03 2013

Lease Expires:       Sun Oct 06 01:28:02 2013

DNS Servers:         192.168.2.1

Adapter Name:        {0392DEE3-4F2A-4EED-8133-34D4E6248495}

Description:            Marvell Yukon 88E8057 PCI-E Gigabit Ethernet Controller

IP Address:             0.0.0.0

Subnet Mask:          0.0.0.0

Default Gateway:    0.0.0.0

DHCP Enabled:      Yes

DHCP Server:        

Lease Obtained:     Thu Jan 01 05:30:00 1970

Lease Expires:       Thu Jan 01 05:30:00 1970

DNS Servers:        

Active Connection: LAN Connection

Connected:             Yes

Online:                    Yes

Using Modem:        No

Using LAN:             Yes

Using Proxy:           No

Firewall Information

Windows Firewall is off.

Connection attempt to Apple web site was successful.

Connection attempt to browsing iTunes Store was unsuccessful.

The network connection timed out.

Connection attempt to purchasing from iTunes Store was successful.

Connection attempt to iPhone activation server was unsuccessful.

The network connection timed out.

Connection attempt to firmware update server was unsuccessful.

The network connection timed out.

Connection attempt to Gracenote server was successful.

The network connection timed out.

Last successful iTunes Store access was 2013-10-06 01:27:23.

**** CD/DVD Drive Tests ****

LowerFilters: PxHlpa64 (2.0.0.0),

UpperFilters: GEARAspiWDM (2.2.3.0),

G: Optiarc DVD RW AD-7700S, Rev 1.70

Drive is empty.

**** Device Connectivity Tests ****

iPodService 11.1.1.11 (x64) is currently running.

iTunesHelper 11.1.1.11 is currently running.

Apple Mobile Device service 3.3.0.0 is currently running.

Universal Serial Bus Controllers:

Intel(R) ICH9 Family USB Universal Host Controller - 2934. Device is working properly.

Intel(R) ICH9 Family USB Universal Host Controller - 2935. Device is working properly.

Intel(R) ICH9 Family USB Universal Host Controller - 2936. Device is working properly.

Intel(R) ICH9 Family USB Universal Host Controller - 2937. Device is working properly.

Intel(R) ICH9 Family USB Universal Host Controller - 2938. Device is working properly.

Intel(R) ICH9 Family USB Universal Host Controller - 2939. Device is working properly.

Intel(R) ICH9 Family USB2 Enhanced Host Controller - 293A. Device is working properly.

Intel(R) ICH9 Family USB2 Enhanced Host Controller - 293C. Device is working properly.

FireWire (IEEE 1394) Host Controllers:

Ricoh 1394 OHCI Compliant Host Controller.  Device is working properly.

**** Device Sync Tests ****

No iPod, iPhone, or iPad found.

Thank you very much 'IIIaass' the DNS changes worked for me. Alas after 5days the issue is resolved.