[stunnel-users] problem running stunnel as windows service

stunnel 5.38 on x86-pc-msvc-1500 platform compiled/running with OpenSSL 1.0.2j-fips 26 Sep 2016

Windows Server 2012R2 Standard

When I try and start the service I get:

Windows could not start the Secure Socket Tunneling Protocol Service on the Local Computer. Error: 1079: The account specified for this service is different from the account specified for other services running in the same process.

So after a little reading I went into Services->Logon and checked: Allow Service to interact with desktop

Same Error

So I created an account in the Local Administrators group and gave it logon as a service

Same thing

Any ideas?