Thursday, November 1, 2012

Intermittent AOL PIC issue in Lync

Initially when we configured Lync fo Public IM communication we have recieved lot of omplaints from users related IM failed when the communicate with AOL users.After Lot of touble shooting found one solution and it helped me to resolve our issue.

In order to resolve this, you need to change the Cipher Suite order used by Windows such that TLS RSA with RC4 128 MD5 is tried first.
In order to change the Cipher Suite order, do the following on your Access Edge server:
  1. Launch the Group Policy Object Editor using: Start --> Run -> gpedit.msc
  2. Within the Group Policy Object Editor, traverse down to; Computer Configuration --> Administrative Templates --> Network --> SSL Configuration
  3. Click on SSL Configuration, and then double-click on SSL Cipher Suite Order (by default, the SSL Cipher Suite Order is set to "Not Configured")
  4. Select the “Enabled” radio button, and in the in the SSL Cipher Suites text box, copy the entire string into Notepad.
  5. Find  TLS_RSA_WITH_RC4_128_MD5, in the list and cut and paste it to the first item in the list.  (Be sure to take the trailing comma with it so you don't end up with a ",," in the list)
  6. Paste the newly-formatted string back into the text field in the GPO Editor, click OK
  7. Restart (reboot) the Lync Access Edge server for these changes to take effect.
Thanks for below Link.

No comments:

Post a Comment