The new version of Skype doesn’t work and I had accepted that fact until out of desperation I discovered that with some simple modications it is possible to run an older version of Skype on your older Mac. I have a Powerbook G4, running OSX 10.5.8 on on PowerPC processor. The only problem is that Skype is no longer working on Macs with anything other than OS X 10.6 – 10.8.

If, like me, you are not in a position to afford a newer Mac and are quite happy with the one you have. Running on the old powerful version 2.8 that now is back to run on any MAC any OS starting from 10.4 and up Skype running on a Powerbook G4 PPC with OSX 10.5.8 The Skype for Business on Mac client supports Cert-based authentication, Microsoft Modern Authentication, and Multi-Factor Authentication when deployed and enabled.Skype works fine on older Macs, powerbooks and power pc g3 g4 g5 – Tiger Os Leopard and even INTEL. The client has the same requirements as our mobility clients in that you must have an Access Edge Server and Reverse Proxy deployed in a supported configuration. The Skype for Business on Mac client leverages both the Unified Communications Management Platform (UCMP) as well as the Unified Communications Web API (UCWA) that our mobility clients use. Infrastructure requirements for Skype for Business on Mac These clients are not supported by Skype for Business Server 2019. Microsoft Communicator for Mac 2011 (see Communicator for Mac 2011 Deployment Guide) Microsoft Lync for Mac 2011 (see Lync for Mac 2011 Deployment Guide)

For details about supported features, see Desktop client feature comparison for Skype for Business. Skype for Business Server 2015 also supports the following legacy clients on computers that are running Mac OS 10.5.8 or latest service pack or release (Intel-based) operating systems (Mac OS 10.9 operating system is not currently supported). Refer to the System requirements for the minimum hardware required.

This list is preliminary and some devices may be qualified for Lync, but not supported on Skype for Business on the Mac.

Skype for mac os x 10.5.8