| Parameter | Required Setting | Rationale | |-----------|-----------------|------------| | | IKEv1 (only) | Shrew Soft does not support IKEv2; Windows 11 prefers IKEv2 natively. | | NAT Traversal | Force enable | Windows 11’s stricter NAT handling breaks default Shrew detection. | | Fragment Size | 1300 bytes | Avoids MTU issues caused by Windows 11 TCP stack optimizations. | | Authentication | PSK or x.509 | EAP-MSCHAPv2 often fails due to Windows 11 Credential Guard. |
Officially, the last stable release of Shrew Soft (version 2.2.2, dated 2013) was designed for Windows 7, 8, and Server 2008 R2. However, many users have successfully run it on Windows 10 and Windows 11 using compatibility tweaks. shrew soft vpn client windows 11
: Includes advanced features like a 14-day trial, specifically for corporate LAN connectivity. Compatibility | Parameter | Required Setting | Rationale |