One computer can't talk to other computers on network

I have a home airport network. All our computers and devices log on and use wifi and internet with no problems except suddenly one MacBook can no longer connect to the other computers on the network. It shows up in the list of devices on those computers but when I try to connect I get a message sayong the computer is not available. This happens in both directions. However, the "lost computer is on the network and can access the internet. Other computers on the network have no problem connecting to each other. The problem MacBook was working fine the last time I tried this and I've made no changes to it since then. I've tried restarting, clean restarts, etc. Nada. Help please.

Hopefully Apple will come to your aid
• Make sure all the computers on your LAN are on AppleTalk w/ File Sharing: On
• Check the Firewall settings of all workstations
• Confirm that your User or Admin account has sufficient Privileges to access sharepoints
• Reboot all machines to flush their DHCP lease or IP bottleneck
P.S. there are known issues currently with Leopard File Sharing to-and-from pre-Leopard OS X's. I do not know why your window magically closes itself. Last, run Software Update. Good luck.

Similar Messages

  • One computer can't see any other iPhoto shared libraries

    My Powerbook can't see any other computer's shared iPhoto libraries. However, all my other computers can see its iPhoto library.
    All computers are running the same version of iPhoto.
    I posted this in the iPhoto forum, but I'm reasonably sure this is a networking problem. Why? If I create another user on my Powerbook, it can see all the other shared libraries. So, the problem exists on only one account on one computer. I think there is a corrupt system setting in that account's ~/Library/ somewhere. Any suggestion which file it is? I've already dragged out likely culprits to no avail.
    I have no problem sharing iTunes libraries; that works fine. So do file transfers to and from.
    Here's what else I've done:
    Verified iPhoto Preferences is set to "Look for shared photos" and "Share my photos" (obviously).
    Tried requiring a password, and not requiring a password
    Verified System Preferences > Sharing > Firewall has "iPhoto Bonjour Sharing" checked.
    Deleted ~/Library/Preferences/com.apple.iPhoto.plist
    Deleted ~/Library/Preferences/com.apple.systempreferences.plist
    Deleted ~/Library/Preferences/com.apple.iApps.plist
    Deleted ~/Library/Preferences/com.apple.digihub.plist
    Turned off Little Snitch
    Quit / restarted iPhoto a few times
    Logged in / out, rebooted a few times
    Researched iPhoto Help
    Researched the discussion boards
    Repaired permissions on both (as you can see, I'm resorting to voodoo tactics)
    Dragged my iPhoto Library out of ~/Pictures and created a brand new empty library (more voodoo)
    Googled the problem
    Posted this topic
    That's all I can think of to do.
    So... what haven't I done?

    If iPhoto works for one user on a computer, it ought to work for all users. So the program itself can't possibly be a problem. Right?
    Apparently not. I deleted iPhoto, and reinstalled it. That fixed the problem for the one recalcitrant account.
    The problem with voodoo is that sometimes, it works.

  • We have a PC with iTunes that needs the hard drive reformatted. Right now, it can't connect to other computers on the network. Can I save my music to a thumb drive, then re-load when the computer is reformatted?

    We have a Windows XP desktop with iTunes for windows. The hard drive needs to be reformatted. Right now, the computer will not connect to other computers on the network. Can I save my iTunes songs to a thumbdrive, then re-load after reformatting?  How do I do it?

    Copy the entire iTunes folder out to the drive. If it is too big to go as one copy stuff over to another computer in batches. It is important to have not only the media but the library file in order to properly restore your library.
    See also this User Tip. Assuming the machine won't connect to the internet you could download the SyncToy installer on another machine and then transfer it with the thumb drive. If it will connect to the net don't forget to deauthorize the machine before reformatting the hard drive.
    tt2

  • I can't connect to other computers on my network with computer names. Any suggestions?

    i can't connect to other computers on my network with computer names. Any suggestions?

    In what way are you trying to connect? File sharing? Printer sharing? Screen sharing? Something else?
    How are your computers connected to this network? What happens when you try to connect to them?
    Best of luck.

  • I need to authorize my computer but i am unable to do so as i am authorized to many times but i can't authorize the other computers because they are broken, what should i do?

    i need to authorize my computer but i am unable to do so as i am authorized to many times but i can't authorize the other computers because they are broken, what should i do?

    About Authorization and Deauthorization.
    Follow the instructions in the above link to deauthorize all and then authorize only the computers that you physically have access to and need authorized.

  • If I bought Lion on one computer, can I use on my other computor?

    If I bought Lion OX on one computer, can I install it on my other computor or do I buy another download?

    lipcity wrote:
    If I bought Lion OX on one computer, can I install it on my other computor or do I buy another download?
    Yes, on as many as you own. Just log in with the same Apple ID to the App Shop.
    Cheers
    Pete

  • Only one computer can connect to internet at a time!

    When my modem is connected, I plug one ethernet line into one computer. That computer sometime has access to the internet, but sometimes it doesn't work, and another computer is able to access the internet. Each computer uses different cables. When one computer has internet, other computers cannot access the internet if we decide to connect via another cable. Using the same cable doesn't work, also. Sometimes, all computers cannot access the internet.
    For example, this computer I am using to write this currently has internet. However, when I unplug this computer's ethernet line from the modem and connect the other computer's ethernet line into the modem, it cannot connect. (Safari cannot connect to the internet.) Network diagnosis has a GREEN light next to "Built-In Ethernet," YELLOW for "Network Settings," and RED for the rest (ISP, Internet, Server)
    Lastly, in the Network Status in System Preferences, Built-In Ethernet is YELLOW and says that it has a self-assigned IP address. However, I did not self assign the IP and is set to 'Automatic.'
    Thank you so much!

    Do I understand this correctly? You have one modem with one ethernet jack on it. Only one computer can have access to the internet at a time, depending on who you plug in to the modem? If the computers have wireless capability, you don't have a wireless access point or wireless router, so you can't take advantage of the computers' wireless. You don't have a wired hub or more than one ethernet jack on the modem nor do you have a stand-alone router (that plugs into the single ethernet jack on the modem) with multiple ethernet jacks, so multiple computers cannot connect to the internet simultaneously.
    If this is the case, then when you turn on a computer that isn't plugged in, since there is no router there for it to obtain an address from (I'm assuming your computers are set up for DHCP), it is going to try to create/join it's own ad-hoc network and give itself a self-assigned address beginning with 169.x.x.x. (If you had a multi-port hub or wireless access point, with no routing capabilities, this is how you could set up an isolated network of computers without access to the outside world but with access to each other).
    Meanwhile, your modem is either giving the plugged-in computer a 192.x.x.x or a 10.x.x.x address (unless you changed stuff in it) or it is passing your public IP address presented to it by your ISP straight through to your plugged-in computer (that was plugged when when you booted up).
    So when you unplug one and plug in another, the network settings don't match. If you unplugged one and plugged in the other and then booted up the other one, I would expect to see a working internet connection at that point.
    If my original assumption of your home configuration is in error, please describe how you are set up, e.g., internet<-->modem<-->router<-->computers or whatever. Maybe do that anyways, even if my assumption is accurate. Describe whether your modem employs NAT or is in bridge mode? Does it have a DHCP server and is it enabled or is it set up for static IP on your home LAN? Describe whether your router, if not built into the modem, employs NAT or is in bridge mode? Does it have a DHCP server and is it enabled or is it set up for static IP on your home LAN? How are your network settings configured in your computers? DHCP or other (what)? A visit to your modem and/or router configuration pages, to see what the external WAN address (a.k.a. public IP address) (at least the first one or two or three octets), and what do your computers' sys prefs IP address, router address, and DNS server addresses say they are, would be helpful, too (you can safely divulge publicly full 192.x.x.x, 10.x.x.x, and 169.x.x.x addresses because they are not routable). I don't know about other folks reading this, but I would need to know quite a bit more about your home network architecture and configuration.

  • My husband does not have an itunes account and wants to set one up and we only have the one computer. can you have two separate accounts? We want to set up separate iphones.

    My husband does not have an itunes account and wants to set one up and we only have the one computer. can you have two separate accounts? We want to set up separate iphones.

    How to use multiple iPods, iPads, or iPhones with one computer

  • How do i save my document on pages so that i can open it on other computers

    How do I sav emy document on pages so that i can open it on other computers?

    Well, that was the short answer, then I rethought your question.
    Will the “other computers,” be Mac, or a mixture of Mac, Windows PC, and possibly Linux?
    What application on the other computers will be accessing the Pages content created on your MacBook Pro?
    Using the File export options I originally mentioned, you could save the files to iCloud. Then on the other computer, you use the web browser to sign into your iCloud account. When you click the iWork icon, the files that you saved from your MBP will be there. You can then right-click on the file you want and a download option exists.

  • HELP!! WRT54G2 works for one computer, but not for the other

    I have a WRT54G2 and it is connected to 2 computers. The internet works in one computer, but not on the other. The tech support said i needed to configure it or firmware or something like that. But my product is out of warranty and I really need the internet on the other computer as well. Please Help!!!

    As your one computer is working fine then there is no problem with the router so far...
    The computer which is not working...check the IP Address on that...
    Click Start >> All Programs >> Accessories >> Command Prompt...A black box will appear(Command Prompt)...In the Command Prompt window type ipconfig and press 'Enter'...Look for Ethernet Adapter Local Area Connection IP Address , Subnet Mask and Default Gateway...
    IP Address should be 192.168.1.x, Subnet Mask : 255.255.255.0, Default Gateway : 192.168.1.1 (assuming your router is 192.168.1.1)...
    If you get the above mentioned IP Address, Subnet and Gateway Address then you should ping the Gateway, type ping 192.168.1.1 and press Enter...If it gives you request timed out then disable any firewalls, security softwares on the computer...
    If you get 4 replies then type ping 4.2.2.2 and press Enter, if you get request timed out, then you need to upgrade your router's firmware...If you get 4 replies then type ping yahoo.com and press Enter...If you get replies for Yahoo then you should get the Internet after adjusting the browser settings...
    Adjusting Browser Settings : Open an IE, click Tools >> Internet Options, then delete all files, cookies, history, forms...Goto "Connections", make sure Never Dial a Connection is checked, click on LAN Settings and make sure all the options are unchecked...Once you are done click on O.k...Close the IE and re-open it...
    If yahoo times out then provide static DNS on your LAN Connection...
    Click on the Start button >>> Settings >>> Control Panel >>>Network Connections- Right click on the icon for Local Area Connection and go to properties- On the 'General' tab select 'Internet Protocol TCP/IP' and click on the Properties button- Select 'Use the Following DNS Settings' Preferred DNS 4.2.2.2 Alternate DNS - 192.168.1.1>>Click on Ok button to Save and Click on "Close" on main Properties window...You should be able to go online...

  • I brought a Creative Cloud Student and Teacher Edition (one-year) can I install on two computers?

    I brought a Creative Cloud Student and Teacher Edition (one-year) can I install on two computers?

    Welcome to the forum.
    http://helpx.adobe.com/x-productkb/policy-pricing/education-faq.html
    http://www.adobe.com/products/creativecloud/faq.edu.html
    Can I use the software I download from Creative Cloud on multiple computers?
    Yes, you can install and activate Creative Cloud desktop applications on two computers, regardless of operating system, for the individual associated with the Creative Cloud membership. See the product license agreements page for more information.
    There is also a forum for general Creative Cloud questions:
    http://forums.adobe.com/community/creative_cloud

  • Can't find other computers on network

    Hi. Every once in a while (aka, 1/4 times) I can't see any other computers on my network. I am using a MacBook (with Tiger, of course), my brother has a a G5 iMac with Panther, there's an XP PC, and a win98 PC on the network. I access the network wirelessly and everyone else is wired to the router.
    What happens is I that I go to the network tab in finder and wait but no computers show up, not even the other mac. I restart and that usually fixes it. The problem happens at totally random times.
    The problem also occurs on the iMac, with the same behaviour.
    Any ideas about what is happening?
    -Eric

    I don't think that's it. Remember, it also happens to the iMac -- and it's wired to the router. When it happens the iMac isn't even able to see the other PC's, which are also wired.
    This problem also occured before I got the MacBook -- it happened on the iMac. And at that time we only had a wired router. So, I was trying to access a PC with XP over a wired router with the iMac and it still happened. So, I'm guessing it's a problem with OSX (and not just Tiger because the iMac has Panther).
    Oh and by the way, we currently use a wireless-g router by Trendnet (model number TEW-432BRP). It has 4 wired ports for ethernet cables and an antenna for wireless.
    -Eric

  • HT1338 For the past few days, I have not been able to read my incoming hotmail nor any of the emails in all my folders on my iMac. However, I can do so using other computers on Windows. Please advise what can be done.

    For the past few days, I have not been able to read my incoming hotmail nor any of the emails in all my folders on my iMac. However, I can do so using other computers on Windows. Please advise what can be done.

    For the past few days, I have not been able to read my incoming hotmail nor any of the emails in all my folders on my iMac. However, I can do so using other computers on Windows. Please advise what can be done.

  • One computer can't see others' shared songs

    I have a LAN with a Mac and two XP PCs. All three are sharing their music, all three have "look for shared music" turned on.
    The Mac can see both PCs. One PC can see both the Mac and the other PC.
    The other PC, however, can't see either.
    This is my laptop running ZoneAlarm, but iTunes is enabled for everything. I have tried turning on and off "look for shared music" trying to "reset" it, but nothing happened (and YES, it IS turned on).
    Any ideas on how to get the laptop to see the other two? I was going to use this as my "airTunes box" in the living room, but it can't see my music...
    Matthew

    You might have to manually allow the IP addresses of the other two computers in Zone Alarm. Put them in the trusted zone, either by IP range or individually. I had this problem too with the Zone Alarm free edition. Adding the IP addresses solved the problem.

  • In my small office ethernet network all of a sudden one of my imacs cannot be connected to. It can connect to all other computers and can access internet, but as soon as someone tries to connect to that mac, it disconnects from the network. Any ideas

    I have a network of 9 macs that connect via ethernet and a router. All of a sudden one of the macs cannot be connected to. It can connect to all others and the internet, but no one can connect to that one. I have appletalk active and file sharing on, but everytime someone tries to connect to it, it is not on the network. Additionally, the personal file sharing keeps turning off even though I have it locked. Any ideas?

    Hi orangekay
    not sure where you got the idea that I have
    bizarre encrypted filesystem plugins and scripts you have manipulating them all the time
    because I do not have any such running, just normal Applescripts that do tasks that could be done by hand.

Maybe you are looking for