Frequently Asked Questions
Can I still use SHA1 with IPSec VPNs on macOS Tahoe?
While Apple has removed native support for SHA1-based authentication algorithms like SHA1-96 and SHA1-160 in macOS Tahoe, VPN Tracker 365 continues to support these legacy algorithms to ensure compatibility with older IPSec VPN setups.
Many VPN gateways still rely on SHA1 for authentication and integrity. On macOS 26, this may cause connection issues like “No proposal chosen” or silent negotiation failures. With VPN Tracker, you can continue using your existing configuration without needing to update your gateway.
To get your connection working again, follow this step-by-step guide.