macOS Users: Postpone Upgrade to Big Sur Operating System

Sent on behalf of Information Security

Dear macOS Users,

As you may be aware Apple has officially released macOS Big Sur, its latest operating system for Macs and MacBooks.

If you are a Mac user and use AdminSys VPN with an eToken, please postpone upgrading to this new operating system. This upgrade is not compatible with U of T’s AdminVPN server version and Information Security is currently working on a server upgrade. We will release this upgrade as soon as testing is completed.

If you have any questions, please contact

Please stay tuned for more details.


Jin Fang
Manager, Security Service Delivery
ITS Information Security
University of Toronto