How to fix the issue of Windows 10 not connecting to IPSEC/L2TP VPN servers
Last modified date:
2018-07-23
This is an issue with Windows 10 but there is a quick fix for it. Please launch Registry Editor by following the steps below:
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Click the Start menu, type in “regedit” and hit Enter.
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Click “Yes” when prompted “Do you want to allow this app to make changes to your device?”
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Please navigate to the following location within the Registry Editor:
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ PolicyAgent
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Once you’re in this location, open the “Edit” menu, select “New” and then “DWORD (32-bit) Value”
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Name this value “AssumeUDPEncapsulationContextOnSendRule” and hit Enter.
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Double click the newly created value and set “Value data:” to “2” and press “OK”.
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Restart your computer for the change to take effect.
