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Level 1

8 points

device on network using same IP address

Occasionally, this dialogue box appears when awakening my iMac. It says:

"Another device on the network is using your computer's IP address (10.0.1.20)", and
continuing in smaller print: "Try connecting again later. If you continue to have problems,
change the IP address of this computer or the IP address on the other device.
Contact the network administrator if you need more information".

I have this Mac, a Mac Laptop, an iPhone, and an iPad connected to my Airport Extreme. What can I do to eliminate this box? It doesn't seem to effect anything when I click "OK", and it disappears. It's just annoying!

latest gen. intel iMac, Mac OS X (10.6.6), 500 gig HD, 4 gig RAM, superdrive

Posted on Feb 26, 2011 9:16 AM

21 replies

MacDenney Author

Level 1

8 points

Mar 2, 2011 2:55 PM in response to Linc Davis

Thanks again Linc,
I went ahead and did the WPA 2 Personal encryption security that you suggested. Everything fine.
However, my HP Photosmart C4780 WIRELESS printer does not work! So I dumped the
security and it immediately got to work on its printing assignment.

Any suggestions. Thanks

Linc Davis

Level 10

209,547 points

Mar 2, 2011 3:08 PM in response to MacDenney

1. If the printer supports WPA 2, find out how to enable it; or

2. If the printer doesn't support WPA 2, connect it via USB to your AEBS or to a Mac, and share it that way; or

3. Get a new printer.

Running an insecure wireless network shouldn't be one of the options.

majjo84

Level 1

0 points

Mar 3, 2011 6:20 AM in response to MacDenney

I've had the same router and internet connection for over 2 years now. Last Saturday I was online and all of a sudden got the same message you got. Since then I haven't been able to connect again. I tried with the Ethernet cable to my netgear router to check the router's iP address and configure it again, but even though it says the Ethernet connection is working, I can't get to open any website (not even the router's address). All of my other products (2 iPhone 4 + a MacBook) still work and go online perfectly. My MacBook pro is the only one with the problem and the message keeps coming now everytime I awake it.
How can I solve this?
I tried getting tech assistance from the Internet company, but they were really useless. They were rude and incompetent. Just said that didn't understand what was wrong since for the line and connection is fine. I need help, pleeeeeeeeaaaaaaase

I work with my comp and Internet a lot.
Please help!
Thanks!

Linc Davis

Level 10

209,547 points

Mar 3, 2011 6:34 AM in response to majjo84

The above steps didn't work?

MacDenney Author

Level 1

8 points

Mar 3, 2011 9:22 AM in response to Linc Davis

Hi Linc, Yes the security worked for all devices! But, as I said, the wireless printer did NOT work, so I had to quit the security. Then the printer worked fine!

Now, how to get the printer to work with security. . . . . .
MacDenney

MacDenney Author

Level 1

8 points

Mar 3, 2011 9:27 AM in response to Linc Davis

Link, You can disregard my last post, I got the thread order mixed up. I'll take your advice on the printer problem.
Thanks again

device on network using same IP address