I try to run Mobile VPN to access my company's file, but connect failed.
I got the some error message.
FAILED: Cannot perform http request 12007.
Have anybody know what mean it is?
Check that TLS 1.1 and TLS 1.2 are enabled
Mobile VPN with SSL connections fail from some versions of Windows and macOShttps://watchguardsupport.secure.force.com/publicKB?type=Article&SFDCID=kA10H000000g3WlSAI&lang=en_US
That simply means that the VPN client was able to connect to the VPN server (the firewall.)
I'd suggest contacting your internal IT department for help, as they'll know what settings you need to punch in, and can open a support incident with WatchGuard if they need assistance.
WatchGuard Customer Support