Microsoft recently announced the availability of Lync-Skype connectivity. If you haven't been able to get up and running yet, then you've come to the right place.
Before you begin though, check out our three most popular answers:
Did any of these suggestions get you connected? If not, read on
This can happen when the Lync user has Lync options set so they are not notified when someone else adds them as a contact.
Solution The Lync user must go to Options > Alerts >General alerts, and then select Tell me when someone adds me to their contact list.
This happens when the Lync user chooses Remove from Group instead of Remove from Contact List.
Solution In the Lync main window, click Relationships, and then remove the Skype user from the list.
This currently happens in less than one percent of the cases, and is scheduled to be fixed in the next service update.
Workaround Try the call again. NOTE: A fix for this will be available by June 30 as part of the Lync 2013 cumulative update.
A Lync user adds a Skype user with a custom Microsoft account such as email@example.com, and can’t see their presence or send them IMs.
Workaround Add the contact using the following format: bob(contoso.com)@msn.com, where firstname.lastname@example.org is the custom Microsoft account name of the person you’re trying to contact. For details, see Lync users can't communicate with external contacts who have Microsoft accounts that have a custom (EASI) domain.
This situation occurs when the Skype user signs in with a newly created Microsoft account, and the Lync user has the following alert setting: Options >Alerts > Contacts not using Lync >Allow anyone to contact me.
Workaround You can either wait for five minutes, or sign out of Skype and then sign back in. You can then see the Lync user’s presence.
This happens when a Skype and a Lync user both remove each other as contacts. When one person tries to add the other contact again, the other person does not receive a contact request.
Workaround The Lync and the Skype user must both add each other as contacts again.