Hi
first of all, I apologize if this is not the right place to post this question, but as this original post shows as "Not Answered", I didn't want to open a new question about an issue that is reporting the same error message.
In my case, I'm a network engineer, so excuse my lack of knowledge about anything related to SAP, but the thing is that I'm trying to help to solve an issue with a user that, in a specific situation, is having problems to logon using SAP GUI 730 for Windows.
The situation is as follows:
When the user is connected to an IPv4 only network with the main NIC, everything works fine.
When the same user connects a second laptop's NIC to a dual stack IPv4/IPv6 network, two things happen:
1.- Without doing anything, the user cannot login, getting the error described in the original post (see attached screenshot)
Image may be NSFW.
Clik here to view.
2.- If the user disables the IPv6 stack in the laptop's second NIC (see attached screenshot), is able to logon again without any issues
Image may be NSFW.
Clik here to view.
In all cases, the communication with the SAP server is using the Laptops's main NIC (that is IPv4 only)
My questions are: during the SAP logon process
.- Is there exchanged information about the device NICs (IP address, DNS, etc..) of the end user's device?
.- If so, what data is captured and from what device's NIC (if has mode than one active at the same time)?
I just want to figure out if the fact that one of the NICs is connected to an IPv6 network and gets an IPv6 address, is causing that during the logon process, by chance the application has captured info out from that NIC and is causing a logon error, because the communication with the server is expected to be IPv4 only, and the server is dropping the request because either does not understand the received info or is not configured to accept it.
I appreciate if anyone can shed any light on this
Many thanks!!
