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My SonicWall connection fails with “Negotiation Failed ... - KH2190

Frequently Asked Questions

My SonicWall connection fails with “Negotiation Failed (PPP)”
 
SonicWall's SonicOS 6.5.4.15-116n update breaks SSL-VPN connections with SonicWall Mobile Connect and VPN Tracker 365. In VPN Tracker's log, you can also see the error message:
LCP: PPP peer accepted proposal but also modified it which isn't allowed.
Please update your Sonicwall to at least SonicOS 6.5.4.15-117n to fix this problem. For more information, please visit: https://www.sonicwall.com/support/knowledge-base/mobile-connect-breaks-after-upgrade-to-sonicos-6-5-4-15/240903132324983
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