Use
When you upgrade an SAP System from Release 2.x to Release 3.x, copy the file
saplogon.exe to the directory in which the sapgui.exe file was installed. The saplogon.ini file should be saved locally in the Windows directory. You should save the sapmsg.ini and saproute.ini files, however, in the frontend installation directory.Procedures

With Windows 3.1/3.11, the files are normally in the directory
The first line must contain the entry
[Message Server] . For each SAP System that is available, the following entry should exist:<SID> = <host name on which the message server is running>
.
[Message Server]
C11 = hostname.yourdomain
O01 = oss001
saproute.ini
The first line must contain the item
[Router]For each possible network connection, the following entry should exist:
<route name>=<route>
Here
<route> is formulated as:/H/<hostname on which the SAProuter is running>/S/<service>
You can concatenate several of these strings if the connection uses multiple SAProuters.

[Router]
SAP Walldorf=/H/hostname.your.saprouter/S/sapdp99/H/147.204.64.1/S
/sapdp99
SAP Foster City=/H/hostname.your.saprouter/S/sapdp99/H/147.204.69.1/S
/sapdp99
sapms<SID> <nr.>/tcp

sapmsC11 3670/tcp
sapmsO01 3616/tcp
The configuration data is stored in the
saplogon.ini file in the Windows installation directory. You can configure the file names and the path specifications of the saplogon.ini file as you like. You should also save this individually-configured file locally.If you are the administrator and want to preset a particular selection for the user, you can either deactivate:
To deactivate the selection options for Group Selection and Server Selection:
To log on to the system, you only need the
saplogon.ini file. If sapmsg.ini and saproute.ini are not available locally, the selection options are not available to the user.Alternatively, you can call the
saplogon.ini file and insert the entry Restricted Mode=1 in the Configuration section. To be on the safe side, save saplogon.ini as a write-protected file. You could also set the environment variable to slg_restriction=1 for the entire system.To deactivate unrestricted logon for the user:
You can use the
saplgpad program so that users cannot edit or log on freely to the SAP Logon.To log on to the system, you only need the preconfigured file
saplogon.ini .
sapmsg.ini
and saproute.ini are not required at runtime.saplgpad
and saplogon use .ini files from the installation directory. If no .ini files are available in the installation directory, the programs access the Windows directory. If the system still cannot find any .ini files, saplogon creates saplogon.ini in the Windows directory as well as sapmsg.ini (if this is required).When the user logs on, the system displays the SAP Logon. This only contains the selection list.