Lync CU6 Updates sind nun für alle Client, Server und Phones verfügbar.
| Product | Version | KBs | Download |
| Lync 2010 (64bit client) | 4.0.7577.4103 | 2701664 | Download Link |
| Lync 2010 (32bit client) | 4.0.7577.4103 | 2701664 | Download Link |
| Lync Attendant Benutzer Installation | 4.0.7577.4098 | 2496326 | Download Link |
| Server | |||
| Lync Server 2010 | 4.0.7577.199 | 2493736 | Download Link |
| Group Chat | |||
| Lync 2010 Group Chat Client | 4.0.7577.4102 | 2701665 | Download Link |
| Lync 2010 Group Chat Admin | 4.0.7577.4102 | 2707265 | Download Link |
| Lync Phone Edition | |||
| Lync 2010 Phone Edition(Polycom CX700 and LG-Nortel IP Phone 8540) | 4.0.7577.4100 | 2724545 | Download Link |
| Lync 2010 Phone Edition[PolycomCX500, CX600 and CX3000] | 4.0.7577.4100 | 2701671 | Download Link |
| Lync 2010 Phone Edition(Aastra 6721ip and 6725ip) | 4.0.7577.4100 | 2701667 | Download Link |
| Lync 2010 Phone Edition(HP 4110 and 4120) | 4.0.7577.4100 | 2701670 | Download Link |