Network problems after installing Lion on one of three computers

Question

Level 1

35 points

Network problems after installing Lion on one of three computers

I installed Lion on my MacBook Pro, but left Snow Leopard 10.6.8 on my MacPro and iMac. Then I could no longer connect for filesharing from my MacPro or iMac to the MacBook Pro. I could go to the base folders, including Applications, but I could not access my User folder, even though all the Sharing settings remained the same. However, I could connect from my MacBook Pro to the other two just fine. It appears that the Snow Leopard machines cannot make the connection with the Lion machine. But the Lion machine can connect to the SL machines. This means that I can get my File Sharing done, but it would be more convenient if I could use my MacPro as the central machine.

I have no problems with any of my machines when I connect to the internet or printer through my local network.

I've tried unbinding the sharing and redoing the preferences in the Sharing pane, but the situation stays the same. I've rebooted all three machines a few times. I've run maintenance procedures.

When I boot the MacBook Pro with a Clone of the whole disk from before the installation of Lion (so that the MacBook Pro is once again running on Snow Leopard 10.6.8), I have no connection problems.

There's something that needs fixing in the Snow Leopard/Lion interface when one is Sharing files.

MacPro 2.66mhz 7GB RAM, MacBook Pro early 2008 4GB RAM, old Intel iMac, Mac OS X (10.6.8)

Posted on Jul 21, 2011 4:02 AM

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Answer 1

bazito

Level 1

0 points

Jul 21, 2011 7:27 AM in response to jsamu50901

Same problem here. I've just installed Lion on two Macs (iMac and MacBook) and now I can't use file sharing between the two computers. They just don't connect. I can connect as guest, but cannot make they work as registered user.

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Answer 2

Guntis

Level 1

40 points

Jul 21, 2011 7:35 AM in response to jsamu50901

I constantly get disconnected from the WiFi network after installing Lion. I browse web pages, suddenly Safari says there is no network connection. I look at the Airport icon in the menu bar and sure enough, it's light gray. I open it, click on my network name and I have network again. After some 10-15 minutes network is lost again. Network signal strenth is very good, wireless router is 3 meters away. MacBook Pro 17", March 2011 model.

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Answer 3

Jul 21, 2011 8:19 AM in response to jsamu50901

Exactly same problem here, screen sharing works, but not file sharing. I get a message saying "too many users", even though there is only 1.

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Answer 4

Guntis

Level 1

40 points

Jul 21, 2011 9:30 AM in response to swanksalot

As always we will have to waitl till 10.7.2 or 10.7.3 until most of the bugs will be fixed.

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Answer 5

bazito

Level 1

0 points

Jul 21, 2011 10:59 AM in response to jsamu50901

I've created a new account in both computers and tried to connect with the new account. Everything works fine with the new accounts. It looks like Lion messed up with my accounts during the upgrade. No fix for this in sight... It seems I will need to reconfigure a new account im my computer...

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Answer 6

RickyF

Level 1

0 points

Jul 21, 2011 2:26 PM in response to jsamu50901

I installed Lion yesterday on both my iMac 27" and my late 2010 MacBook Air 13". Before Lion they both showed up on the LAN and I could connect each to the other and via my Windows computers. Now I can't. #FAIL

Screen sharing still works.

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Answer 7

Guntis

Level 1

40 points

Jul 21, 2011 2:32 PM in response to RickyF

Try creating new admin account in System Preferences and see how it works. I just created new admin account and all my WiFi problems are gone. I will test few things and if everything's OK, I will move over to this account.

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Answer 8

RickyF

Level 1

0 points

Jul 21, 2011 2:34 PM in response to Guntis

Thanks for the suggestion but...

Even if that works it won't fix what Lion broke. I need to connect the existing accounts not new ones. I get around this issue with a combination of Dropbox, Wuala and Pogoplug.

Hope Apple fixes this bug soon as I cannot recommend my clients upgrade to Lion with a network bug of this magnitude.

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Answer 9

RickyF

Level 1

0 points

Jul 21, 2011 2:54 PM in response to Guntis

Found out I can log on to my networked Macs via the Guest account. So I just need to de-secure my network and share everything on the Macs with Read/Write privileges for everybody, and apply changes to enclosed items.

Was able to get my Macs to see my Windows computers by screwing around with networking. Windows computers can't connect to the Macs now. They used to before Lion.

#FAIL

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Answer 10

Guntis

Level 1

40 points

Jul 21, 2011 2:57 PM in response to RickyF

Oh boy... Create new admin account. Test if it works OK. If it does work OK, move over to your new account. When everything's moved and works fine, you can delete your old account. This is what I'll do tomorrow.

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Answer 11

deivy

Level 4

2,365 points

Jul 21, 2011 3:04 PM in response to jsamu50901

To all,

try turning Sharing off and on in the System Preferences Panel.

It worked for me.

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Answer 12

RickyF

Level 1

0 points

Jul 21, 2011 3:17 PM in response to deivy

Tried turning Sharing off, then on again to no avail. Thanks for the suggestion

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Answer 13

BStickle

Level 1

0 points

Jul 21, 2011 3:39 PM in response to deivy

Thanks deivy.

This also worked for me. Switched off all sharing options on both machines and then switched the ones I wanted back on on both machines. Instantly back to pre upgrade status.

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Answer 14

deivy

Level 4

2,365 points

Jul 21, 2011 6:53 PM in response to RickyF

Just for curiosity, did you repair permissions?

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Answer 15

kane_TO

Level 1

88 points

Jul 21, 2011 7:49 PM in response to jsamu50901

Make sure your accounts home folder is not shared in the sharing pref. pane. I had it setup this way in SL, but with Lion it prevents that user from connecting.

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