I performed a Factory Reset on my Nexus S 4G (Android 4.1.1). Norton Mobile Security reinstalled itself.
If I attempt to open the program, it asks me to name my device. I entered the name I have always used in all programs (it pops up as the sole option). I then receive an error message that a device already exists with this name.
I'd rather not create a second name, as the name I've used this name universally to identify this device.
Any suggestions?
Hi LouMessina
You should be able to fix this problem by first by using the uninstall option of Norton Mobile Security (NMS)
Then by logging in to the NMS website using the link below -
https://mobilesecurity.norton.com
Sign in with your Norton Account details then select the device by name that you are trying to use again as it is your favorite device name.
Then top right of the screen should be a gear icon select this then the option of delete device.
Now on your device download and install NMS again and follow the steps of installing and activating and registering the NMS app.
Hopefully using the steps above your issue should be solved.
Keep us posted on how you go.
Cheers. 
Thanks Smithy. I made headway following your advice. But the problem is not completely corrected.
I went to https://mobilesecurity.norton.com and deleted my device's name. I received an email with a link to reinstall NMS, which I opened on my device. NMS (v. 3.8.6.1520) installed indicating 204 subscription days left, which sounds right. I was able to address the Settings, run LiveUpdate, and perform an Anti-Malware scan. The five other features are greyed out.
I tried returning to the above website to enter the device name. However, I was asked to identify a product purchase. I entered the product key. I then received another email to install NMS on my device. I tried reinstalling again, but there is no change. I am unable to enter the device name on the above URL.
Any suggestions?
PS: There also appears to be a problem with NMU. It indicates I need to upgrade to a full version. Clicking on the Upgrade button generates an error message that the product cannot be upgraded. A check with Google Play indicates an 11/2013 purchase. This matches my information on my Google Task List where I have a reminder set to renew on 11/17/2014.
Thanks for your advice.
(I will be buying an iPhone in the Fall. So please don't put much effort into this.)
Have you tried restarting both your phone and your computer? I had trouble with the NMS dashboard recognising my iPad until I restarted everything.
Yes. I reboot frequently.
I think you may need to go back over Smithy's instructions again.
This time, uninstall NMS from your device. Then go to the mobile security site and delete the device from your account. Log out. Now log back in and see if your account details show up, including your currently active account. Then click on Add device and follow the directions to install NMS on your device.
If your account details do not show up initially, try to register your subscription again before installing to your device.
I uninstalled NMS from my device. I was unable to delete the device name at https://mobilesecurity.norton.com because I had already deleted it earlier.
I entered the Product Key under "Register a Purchase." A link was sent to my device to install NMS. This installed NMS on my device with all features. The name of my device was incorrectly entered at https://mobilesecurity.norton.com. I corrected the name, and assume all is working fine.
Hi LouMessina
That is great news that your issue with the NMS app
Is now fixed.
Remember if you have any issues or questions in the future you always return here and we will do our best to help.
Cheers.