certificate requirements for skype for business

We can use the Advanced mode (also known as old Lync Server 2013 mode), in case we need to specify one of the following settings:

Note: In the Edge Server, the certificate request is the same as in Lync Server 2010/2013, therefore we don’t have the new consolidated view. Now we have all the basic information to request a certificate consolidated in a single window: The Certificate Request wizard will open and we can notice that this user interface changed from Lync Server 2010/2013. Now, in Certificate Wizard, we select the proper certificate and then click Request: Most of the steps are similar to Lync Server 2010/2013, so to start let’s go to the well-known Deployment Wizard Step 3 and click Run or Run Again (depending on if you are requesting for the first time or renewing the certificates).

TLS server certificates must have a validity period of 825 days or fewer (as expressed in the NotBefore and NotAfter fields of the certificate).Ĭonnections to TLS servers violating these new requirements will fail and may cause network failures, apps to fail, and websites to not load in Safari in iOS 13 and macOS 10.15.Here are the steps to request or renew certificates in Skype for Business Server 2015.

TLS server certificates must contain an ExtendedKeyUsage (EKU) extension containing the id-kp-serverAuth OID.

DNS names in the CommonName of a certificate are no longer trusted.Īdditionally, all TLS server certificates issued after J(as indicated in the NotBefore field of the certificate) must follow these guidelines:

TLS server certificates must present the DNS name of the server in the Subject Alternative Name extension of the certificate.

SHA-1 signed certificates are no longer trusted for TLS.

TLS server certificates and issuing CAs must use a hash algorithm from the SHA-2 family in the signature algorithm.Certificates using RSA key sizes smaller than 2048 bits are no longer trusted for TLS. TLS server certificates and issuing CAs using RSA keys must use key sizes greater than or equal to 2048 bits.All TLS server certificates must comply with these new security requirements in iOS 13 and macOS 10.15:

Certificate requirements for skype for business