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:

1.     The Skype user must be signed in with a Microsoft account (formerly Windows Live ID).

2.     If the Skype user is using their own email address as a Microsoft ID (for example, bob@contoso.com instead of bob@outlook.com or something similar) then you have to format their name like this when you add them as a contact: bob(contoso.com)@msn.com. Learn more.

3.     To receive contact requests from Skype, the Lync user has to set their alert level as follows: go to Options > Alerts > Contacts not using Lync and choose Allow invites but block all other communications or Allow anyone to contact me.

Did any of these suggestions get you connected? If not, read on (and if you’re an admin, take a look at  the Provisioning Guide for Lync-Skype Connectivity)…

Lync Server and Lync Online

A Lync user does not receive a contact request from a Skype user

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.

A Lync user removes a Skype user, but the Skype user can still see Lync user's presence and send IMs

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.

When a Lync user calls a Skype user, the call sometimes fails

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.

Lync users can't communicate with Skype users who have a Microsoft account with a custom (EASI) domain

A Lync user adds a Skype user with a custom Microsoft account such as bob@contoso.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 bob@contoso.com 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.

 Lync Online after the service upgrade

Am I using Office 365 after the service upgrade?

Office 365 Small Business customers have External communications turned on, but can’t connect to Skype users

Before May 20, 2013, turning on External communications for Small Business customers didn’t automatically turn on Lync-Skype connectivity. Now it does.

Workaround     Switch External communications off and then back on again. Go to Admin > Service settings > Instant messaging, meetings and conferencing > External communications.

Skype users

Skype users signed in with a new Microsoft account notice a delay of several minutes in seeing the presence status of a newly-added Lync contact

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.

A Skype and a Lync user remove each other as contacts, and then attempt to add each other as a contact again, but are not successful

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.