We are using Cloudflare WARP across about 22 devices/users. One set of WARP policies, one set of config.
One (of the 22) users is getting the an error stating “Failed to set mTLS - Error: CF_FAILED_TO_SET_MTLS”.
We have NOT enabled mTLS, and are not intending nor trying to use it on the account.
UDP and TCP are tunneled. This client (and all others) are Windows 10 laptops. Cloudflare logs show proper Authentication, proper Device enrollment. The only error logged anywhere (that I can find - online, in the Client, or in Debug logs) is some variant of “failedtosetmtls”.
Help?
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Have of course reviewed Client errors · Cloudflare Zero Trust docs , and while it LOOKS relevant at a glance, we have NOT enforced “mutual TLS authentication” for enrollment, and have not built any mTLS certs on the account, so I don’t see any reason this would be in play (again, not affecting any other users).
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Hi @blackbrass97
Could you please check if the user has another VPN client installed locally? If this is the case, then this VPN client needs to be installed. There should only be the WARP client and nothing else.
Tried that - there was an ExpressVPN installed. Removed it and rebooted without any benefit. HOWEVER, another team member was able to resolve this by uninstalling the WARP client, and then re-installing it with our Unattended Install script.
We have no idea why that fixed the issue (your thoughts are welcomed).