Missing CU4 for Exchange Server 2013 ?

Few days ago Microsoft released CU5 for Microsoft Exchange Server 2013.

Probably most of you says: “CU 5 ??? Where is CU4 for Exchange 2013, did I miss something ?”

No you didn’t. Microsoft servicing strategy for Exchange 2013 says new CU for Microsoft Exchange 2013 every 3 months and sometimes service packs indicating a particular milestone in terms of features and support for Exchange Server 2013.

So now you see that Exchange Server 2013 Service Pack 1 is CU4 Exchange Server 2013. This is the same update for Exchange Server 2013.

You can check all updates CU, RU, Service Packs for Exchange Server releases in your website:

Exchange Updates

For Exchange Server 2013 we have:

  • Exchange Server 2013 RTM
  • Exchange Server 2013 CU1
  • Exchange Server 2013 CU2
  • Exchange Server 2013 CU3
  • Exchange Server 2013 CU4/Service Pack 1
  • Exchange Server 2013 CU5