Updating wiki process
If upgrading to ZCS 8.7.0, you need to completely disable SSLv3 support after the upgrade.
To continue the upgrade, see Multi-Server Environment Upgrade Steps.
Whenever upgrading, it is recommended that you check the values of the following attributes ( See https://wiki.zimbra.com/wiki/Cipher_suites for the most current information on cipher suite configuration.
Administrators who want to customize the ZCO installation MSI should use the unsigned version of the MSI (Zimbra Connector OLK_n.n.n.nnnn_xnn-unsigned.msi), available in the Zimbra download directory.
Be sure to read the release note information before upgrading.
Note: Bug 105056 noted a problem that can occur during a rolling upgrade if two factor authentication (2FA) is enabled before all mailbox servers have been upgraded to 8.7.