We are attempting to install screensurfer on a clients 
machine. We can connect to the mainframe using the SNA 
applet, but when try to use screensurfer we can't get past 
LU_LINK_ACTIVATING. The following error is written to the NT 
event log

RUI_INIT failed for LU H9LM106T, primary_rc = 100, 
secondary_rc = 1000000 

The surfdiag.log contains

[ 967] RUI Init Status Polled: No Error?--Status is unknown.
[ 968] RUI Init Status Polled: WLUALINKACTIVATING--Link is 
activating.
[ 969] RUI Init Status Polled: No Error?--Status is unknown.
[ 970] RUI Init Status Polled: WLUALINKACTIVATING--Link is 
activating.
[ 971] RUI Init Status Polled: No Error?--Status is unknown.
[ 972] RUI Init Status Polled: WLUALINKACTIVATING--Link is 
activating.
[ 973] RUI Init Status Polled: No Error?--Status is unknown.
[ 974] RUI Init Status Polled: WLUALINKACTIVATING--Link is 
activating.
[ 975] RUI Init Status Polled: No Error?--Status is unknown.
[ 976] RUI Init Status Polled: WLUALINKACTIVATING--Link is 
activating.
[ 977] RUI Init Status Polled: No Error?--Status is unknown.
[ 978] RUI Init Status Polled: WLUALINKACTIVATING--Link is 
activating.

The most common problem in the initial connection to SNA 
Server is security.  If you are starting Screensurfer as a 
service (diagnostic mode not checked), then the correct 
userid and password must be entered in the service control 
(off the NT Control Panel) for Screensurfer.

Best way to test if security is the problem is to start 
Screensurfer with diagnostic mode on, and logged on as the 
same user the applet worked for.

I am running in diagnostic mode, logged in as the user the 
applet worked for. 

Could the problem lie in the way the SNA server has been set 
up ? or could the 3270 session be set up in a way that 
causes the problem ???

Looking at the primary and secondary return codes, it looks 
like the LU_NAME is invalid...

Primary RC= Parameter Check
Secondary RC= LUA_INVALID_LUNAME

LUA_PARAMETER_CHECK 
Primary return code; the verb did not execute because of a 
parameter error. 

LUA_INVALID_LUNAME 
Secondary return code; the lua_luname parameter did not 
match any LUA LU name or LU pool name in the configuration 
file. 

It looks like you have a specific LU (H9LM106T) rather than 
a Pool name defined--if you already have the applet up or 
are accessing this LU from another device, that could be a 
cause of this error...can you specify a Pool rather than a 
specific LU?

Bingo.

I have given it a pool name, and its now works


Many Thanks,

Tom Walder
MediaTel Ltd
http://www.mediatel.co.uk/