M1 Mac VPN Issues?
Here's How to Fix Them
Key Takeaways
Most VPN clients now have native Apple Silicon support, but some issues persist
Rosetta 2 emulation can cause VPN performance and battery problems
SplitTunnel is built native for Apple Silicon with full M1/M2/M3 support
VPN on Apple Silicon Macs
Apple Silicon (M1, M2, M3, M4) Macs use a different processor architecture than older Intel Macs. When Apple made this switch, VPN clients needed updates to run natively.
Most major VPN clients now have native Apple Silicon versions. But you might still encounter issues—especially with corporate VPN deployments that haven't updated.
Common M1/M2/M3 VPN Issues
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VPN client crashes on connect
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Slow connection establishment
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Network Extension errors or permission prompts
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DNS resolution problems while connected
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System Extension Blocked warnings
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Excessive battery drain from VPN
Checking VPN Client Architecture
First, check if your VPN is running natively or through Rosetta emulation:
# Check if app is native or Rosetta
file /Applications/YourVPN.app/Contents/MacOS/*
# Results:
# "arm64" = Native Apple Silicon ✓
# "x86_64" = Running under Rosetta (slower)Native apps run faster and use less battery. Update to a native version if available.
VPN Client Status by Vendor
Cisco AnyConnect
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Native Apple Silicon: Yes (version 4.10+)
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Update to latest version from Cisco
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Remove old Intel version before installing
GlobalProtect
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Native Apple Silicon: Yes (version 5.2+)
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Check Palo Alto support site for latest
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IT may need to push update to your device
OpenVPN Clients
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Tunnelblick: Native support
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OpenVPN Connect: Native support
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Viscosity: Native support
Fixing Network Extension Issues
macOS uses Network Extensions for VPN connectivity. Apple Silicon requires properly signed extensions. If your VPN prompts fail:
Open System Settings → Privacy & Security
Scroll to Security section
Look for blocked system extension
Click Allow to enable it
Restart your Mac
Re-connect to VPN
Kernel Extension (KEXT) Problems
Older VPNs used kernel extensions (KEXTs). Apple deprecated these on Apple Silicon.
If you see "System Extension Blocked" errors, your VPN client needs updating to a version that uses Network Extensions instead of KEXTs.
Contact your IT department or VPN vendor for an updated client.
Performance Issues on Apple Silicon
Running VPNs under Rosetta causes:
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Higher CPU usage
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Increased battery drain
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Slower connection speeds
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More heat generation
Check Activity Monitor—if your VPN shows "Intel" in the Kind column, it's running under Rosetta.
SplitTunnel on Apple Silicon
SplitTunnel is built specifically for Apple Silicon:
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Native M1/M2/M3/M4 support—no Rosetta
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Uses Network Extension framework (not deprecated KEXTs)
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Low power consumption
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Full performance on Apple Silicon
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Works alongside any VPN client
Troubleshooting Steps
Update VPN client to latest version
Verify it has native Apple Silicon support
Check System Settings for blocked extensions
Restart Mac after any VPN updates
Reset network settings if issues persist
When to Use SplitTunnel
Consider SplitTunnel if:
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Your VPN is causing M1/M2/M3 issues
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VPN is draining battery or slowing your Mac
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You need per-app VPN control
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You want a native Apple Silicon solution
Frequently Asked Questions
Built for Your Mac
Native Apple Silicon app. Per-app VPN control. No Rosetta required.
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