Another machine has a duplicate ip?

About once or twice a week the laptop I am using now presents the  message that another computer is using the same IP address as this one. Most of the time I  have 3 or 4 computers online in different rooms. I also have my ethernet going to Dish Network and Roku. Is the message I am receiving something I should be concerned about? If your answer is YES then how should I proceed to find a remedy?
Need -a- ClueRESEARCHERAsked:
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John TsioumprisSoftware & Systems EngineerCommented:
The solution would be to shutdown the laptop and tracert the offending IP....since you are a home user proabably you could check your router if it displays which machines has which IP...
Also there is the solution of assigning static IPs to devices that not change position (i reckon that you take the laptop outside your house so you need to connect dynamically)
Need -a- ClueRESEARCHERAuthor Commented:
Hello John, I am afraid that I am not even near your level of expertise on this trouble. ( Obviously ) So I do not know how to utilize the information you have provided to me. I can give more info, but if you could go a little more in depth with your assistance I would appreciate it.

This laptop has not left my home for over one month now. I am 1/4 mile from the next home in the country.  I will open the router and snoop around and see if I can see anything  unusual and  get back  to you. Thanks!
John TsioumprisSoftware & Systems EngineerCommented:
Well in that case you will need a helping hand...
Get this application AngryIpScanner
Just scan the network to see who has the order to perform this is better to change your IP to another distinct static IP.

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JohnBusiness Consultant (Owner)Commented:
Angry IP Scanner works.

I use Advanced IP Scanner  (Famatech - . It works very well scanning for IP addresses.
John TsioumprisSoftware & Systems EngineerCommented:
By the way what is router make and model...maybe it has good info about the connected devices..
Need -a- ClueRESEARCHERAuthor Commented:
My router is only two months old. It is a monster Linksys model EA9500. I will get the software you recommend, but please comment on something for me. Is the reason for this warning trying to let me  know that I am POSSIBLY being hacked or monitored? Or that someone is trying to use my ethernet?
John TsioumprisSoftware & Systems EngineerCommented:
From this pic i see it has a nice network map functionality and i guess you can click on it and get the IPs of every device.....
JohnBusiness Consultant (Owner)Commented:
Log into the administration section of your router and make sure Remote Management is either OFF (default) or fully secured with a strong password. Then you likely will not be hacked.

Duplicate IP addresses might come from smart phones. Our iPhones tried to steal the IP addresses I was using for my computers. I eventually gave my iPhones Static IP addresses on our home network (cellular everywhere else) and all is working fine,
Need -a- ClueRESEARCHERAuthor Commented:
John & John -- B I N G O ! I am fairly sure you have hit upon the problem. Just yesterday I was attempting to get a duplicate smartphone to access Google Play but with my single account. Only needed an app. I looked and the phone was still on. My Remote Management is off. I am still going to get the software. THANKS EXPERTS!
JohnBusiness Consultant (Owner)Commented:
You are very welcome indeed and I was pleased to help.
John TsioumprisSoftware & Systems EngineerCommented:
Great for you
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