Apple generates a lot of buzz and excitement for new operating system releases, but adopting early can have negative side-effects. In general, we recommend people wait a few weeks to upgrade any software so that we can let other people have and solve problems for us. We do not earn points for putting out fires that we set ourselves.
Most software vendors have prepared their software for compatibility with the new operating system, but not all. So far, we have seen incompatibilities between the OS X El Capitan and the following software, and these are just the known knowns:
Microsoft Outlook 2011
After upgrading to OS X El Capitan, many users are unable to retrieve new email via Microsoft Outlook 2011. Outlook freezes and stops responding. Microsoft has acknowledged this issue and recommends that Outlook 2011 users refrain from upgrading to OS X El Capitan until further notice.
Microsoft Office 2016
After upgrading to OS X El Capitan, many Microsoft Office 2016 users are reporting frequent and seemingly random crashes of all Office 2016 applications. Neither Microsoft nor Apple have acknowledged the issue or recommended a remediation. Feedwire recommends that Microsoft Office 2016 users refrain from upgrading to OS X El Capitan until further notice.
Dell SonicWall NetExtender VPN
After upgrading to OS X El Capitan, NetExtender users are unable to connect to remote networks. Neither Dell nor Apple have acknowledged the issue or recommended a remediation. Feedwire recommends that Dell SonicWall NetExtender users refrain from upgrading to OS X El Capitan until further notice.Feel free to email us with any questions about upgrading.
Some Canon printer drivers will not install on OS X El Capitan. Canon has not yet published a list of compatible or incompatible printers and has not yet published updated drivers.
Printer drivers in general are problematic. Check with your printer manufacturer and with Apple for availability before upgrading.
If you have already upgraded to OS X El Capitan and you are experiencing problems with these or any other software, we are here to help. Feel free get in touch via our help page or to email email@example.com.
We will keep this article up to date as news comes in. Hopefully, all of these issues will be resolved within a few weeks of OS X El Capitan's launch.