Dear Dario,
In my step 3, I started Lightstreamer server (by go to "C:\Lightstreamer\bin\windows" folder and run "Start_LS_as_Application.bat") first. After that, I run "DotNetServers.bat" in "C:\Lightstreamer\DOCS-SDKs\sdk_adapter_dotnet\examples\DotNetStockListDe mo\Deployment\Deployment_DotNet_Server" folder. and pop-up error message "LiteralBasedProvider" (I don't know how to upload image to forum) with information "log4net: ERROR [RollingFileAppender] Unable to acquire lock on file C:\Lightstreamer\DOCS-SDKs\sdk_adapter_dotnet\examples\DotNetStockListDe mo\Deployment\Deployment_DotNet_Server\dotnet_1.1\ dotnetserver.log. The process can not access file C:\Lightstreamer\DOCS-SDKs\sdk_adapter_dotnet\examples\DotNetStockListDe mo\Deployment\Deployment_DotNet_Server\dotnet_1.1\ dotnetserver.log, because it is used by another process."

In "C:\Lightstreamer\adapters" folder, I have a subfolder named "StockList_sockets", here my folder :
--------------------
C:\Lightstreamer\adapters
C:\Lightstreamer\adapters\StockList_sockets\classe s
C:\Lightstreamer\adapters\StockList_sockets\lib\ls-proxy-adapters.jar
----------------
And when I try http://localhost:8080/tutorial_demo/default.html , I have LS status :
----------------
09.Dec.07 12:01:16,906 < INFO> Serving request: /lightstreamer/create_session.js
?LS_phase=209&LS_requested_max_bandwidth=30&LS_pol ling=true&LS_polling_millis=10
00&LS_idle_millis=30000&LS_client_version=4.2&LS_a dapter=TUTORIAL_DEMO& from 127
.0.0.1:2414
09.Dec.07 12:01:16,906 <ERROR> Bad request: Requested Adapter, TUTORIAL_DEMO, no
t found
09.Dec.07 12:01:16,906 < INFO> Failed request from 127.0.0.1:2414
09.Dec.07 12:01:16,906 <ERROR> Failure in request processing
com.lightstreamer.a.db: com.lightstreamer.b.a: Requested Adapter, TUTORIAL_DEMO,
not found
at com.lightstreamer.a.gb.a(gb.java)
at com.lightstreamer.i.x.a(x.java)
at com.lightstreamer.i.x.a(x.java)
at com.lightstreamer.i.o.a(o.java)
at com.lightstreamer.i.h.a(h.java)
at com.lightstreamer.i.h.b(h.java)
at com.lightstreamer.h.j.a(j.java)
at com.lightstreamer.h.j.a(j.java)
at com.lightstreamer.h.v.a(v.java)
at com.lightstreamer.g.wb.run(wb.java)
at com.lightstreamer.g.b.a(b.java)
at com.lightstreamer.g.c.run(c.java)
09.Dec.07 12:01:16,906 < INFO> Closed HTTP connection on Lightstreamer HTTP Serv
er from 127.0.0.1:2414
09.Dec.07 12:01:42,906 < INFO> Accepted HTTP connection on Lightstreamer HTTP Se
rver from 127.0.0.1:2420
09.Dec.07 12:01:42,921 < INFO> Serving request: /tutorial_demo/ls/lsblank.html f
rom 127.0.0.1:2420
09.Dec.07 12:01:42,921 < INFO> Reused HTTP connection on Lightstreamer HTTP Serv
er from 127.0.0.1:2420
09.Dec.07 12:01:43,906 < INFO> Serving request: /tutorial_demo/ls/lsblank.html f
rom 127.0.0.1:2420
09.Dec.07 12:01:43,906 < INFO> Reused HTTP connection on Lightstreamer HTTP Serv
er from 127.0.0.1:2420
09.Dec.07 12:01:43,921 < INFO> Serving request: /lightstreamer/STREAMING_IN_PROG
RESS?LS_phase=210&LS_requested_max_bandwidth=30&LS _client_version=4.2&LS_adapter
=TUTORIAL_DEMO& from 127.0.0.1:2420
09.Dec.07 12:01:43,937 <ERROR> Bad request: Requested Adapter, TUTORIAL_DEMO, no
t found
09.Dec.07 12:01:43,937 < INFO> Failed request from 127.0.0.1:2420
09.Dec.07 12:01:43,937 <ERROR> Failure in request processing
com.lightstreamer.a.db: com.lightstreamer.b.a: Requested Adapter, TUTORIAL_DEMO,
not found
at com.lightstreamer.a.gb.a(gb.java)
at com.lightstreamer.i.x.a(x.java)
at com.lightstreamer.i.x.a(x.java)
at com.lightstreamer.i.o.a(o.java)
at com.lightstreamer.i.h.a(h.java)
at com.lightstreamer.i.h.b(h.java)
at com.lightstreamer.h.j.a(j.java)
at com.lightstreamer.h.j.a(j.java)
at com.lightstreamer.h.v.a(v.java)
at com.lightstreamer.g.wb.run(wb.java)
at com.lightstreamer.g.b.a(b.java)
at com.lightstreamer.g.c.run(c.java)
09.Dec.07 12:01:43,953 < INFO> Closed HTTP connection on Lightstreamer HTTP Serv
er from 127.0.0.1:2420
09.Dec.07 12:01:47,906 < INFO> Accepted HTTP connection on Lightstreamer HTTP Se
rver from 127.0.0.1:2423
09.Dec.07 12:01:47,921 < INFO> Serving request: /lightstreamer/create_session.js
?LS_phase=211&LS_requested_max_bandwidth=30&LS_pol ling=true&LS_polling_millis=10
00&LS_idle_millis=30000&LS_client_version=4.2&LS_a dapter=TUTORIAL_DEMO& from 127
.0.0.1:2423
09.Dec.07 12:01:47,921 <ERROR> Bad request: Requested Adapter, TUTORIAL_DEMO, no
t found
09.Dec.07 12:01:47,921 < INFO> Failed request from 127.0.0.1:2423
09.Dec.07 12:01:47,921 <ERROR> Failure in request processing
com.lightstreamer.a.db: com.lightstreamer.b.a: Requested Adapter, TUTORIAL_DEMO,
not found
at com.lightstreamer.a.gb.a(gb.java)
at com.lightstreamer.i.x.a(x.java)
at com.lightstreamer.i.x.a(x.java)
at com.lightstreamer.i.o.a(o.java)
at com.lightstreamer.i.h.a(h.java)
at com.lightstreamer.i.h.b(h.java)
at com.lightstreamer.h.j.a(j.java)
at com.lightstreamer.h.j.a(j.java)
at com.lightstreamer.h.v.a(v.java)
at com.lightstreamer.g.wb.run(wb.java)
at com.lightstreamer.g.b.a(b.java)
at com.lightstreamer.g.c.run(c.java)
09.Dec.07 12:01:47,937 < INFO> Closed HTTP connection on Lightstreamer HTTP Serv
er from 127.0.0.1:2423