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Level 1

5 points

Can't connect to share file from my windows XP after upgrade to Yosemite

I have set up file sharing between my iMac & windows XP, it was working fine before. After I upgrade to Yosemite, I can't access the file from my XP to iMac ! But it is ok from my iMac to XP. I have share folder on both machines share it to each other. I am using workgroup network "Mshome", no domain. In my XP I can see the iMac computer on my network, but overtime I check on it it prompt username & password. I try enter the username & password of my iMac account it won't work. Since Yosemite now don't have short username anymore. I even create a new account name to try but still not able to connect.

The previous set up I have the same account name & password for both iMac & XP, it will connect directly when I turn on the machines.

I do remember when I first setting up it, on my XP username login I need to put some different with the username, but I didn't write it down or record it. Can anyone tell me how to I connect again to my iMac ?

Thanks for you help!

iMac, OS X Yosemite (10.10)

Posted on Oct 27, 2014 6:45 PM

Best reply

DW1001 Author

Level 1

5 points

Posted on Oct 28, 2014 7:28 PM

After search the internet for days, reading all the posts! I find the answer ! In your XP machine do the following

Click Start
Click Control Panel
Click System and Maintenance
Click Administrative Tools
Double-Click Local Security Policy
In the left pane, click the triangle next to Local Policy
In the left pane, click Security Options
In the right pane near the bottom, double-click "Network security: LAN manager authentication level"
Click the drop-down box, and click "Send NTLMv2 response only"
Click OK

By changing the LAN Manager authentication level to "Send NTLMv2 response only", magically everything now works as it should!

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18 replies

Mar 15, 2016 5:17 PM in response to Community User

Thank you, thank you, thank you. For others reading this, my problem was that I could connect to my shared drive on my Mac, but was getting denied by permissions. Changed this XP registry incompatibility level to 5 (from 3 where it was previously) and immediately started working. This was not a problem until upgrading to Yosemite osx 10.10.

TomKTKP

Level 1

4 points

Jul 17, 2016 8:15 AM in response to DW1001

Outstanding DW...I had the same issues in El Capitan too. Your solution was terrific. I would have never guessed.

Jul 24, 2017 1:34 PM in response to DW1001

I just set this up on a Windows XP machine and it worked wonderfully; allowing it to connect to a OS X 11 Mac. Thank you for the info.

Can't connect to share file from my windows XP after upgrade to Yosemite