SAP Basis Tech Supports

Symptom

You received “401 Authorization required” when trying to logon to Web Dispatcher Administration

Other terms

Web Dispatcher, Authorization

Reason and Prerequisites

Typically it is due to configuration problem with the wrong setup of web dispatcher monitoring interface.
Another possible reason could be that the icmauth.txt file is not specified or at wrong location.

Solution

1. Firstly, it is recommended to use the latest webdisp available in Service Marketplace in the format of “sapwebdisp_ -XXXXXXXX.SAR”, which contains the important sapwebdisp binary as well as wdispadmin.SAR (instead of icmadmin.SAR since Rel 700).
wdispadmin.SAR should be extracted to sapwebdisp directory (i.e /usr/sap//sapwebdisp). In wdispadmin.SAR, it contains many ICP control files for the Web Administration Interface of ICM
and SAP Web Dispatcher. The README file in wdispadmin.SAR that contains information on how to set up the Web Administration Interface.

2. Please always check the communication with the HTTP port of the message server:
sapwebdisp pf= -checkconfig
Typical Web Dispatcher Administration page is at URL below, depending on your current administration URL Prefix, i.e /sap/admin , /sap/wdisp/admin:
http://: /sap/admin/default.html
Please review Online Documentation:
http://help.sap.com/saphelp_nw04/helpdata/en/5c/b711385ef74d2aada9a7bf12eacd0c/frameset.htm

3. The default location of “icmauth.txt” is “$(DIR_GLOBAL)/security/data”
Please check on definition of the parameter icm/HTTP/admin_ in the profile, and explicitly include icmauth.txt in the AUTHFILE option in parameter icm/HTTP/admin_
i.e icm/HTTP/admin_0 = PREFIX=/sap/admin,DOCROOT=./admin,AUTHFILE=icmauth.txt
If possible, please specify the full path to the icmauth.txt, as well as Admin PORT and Admin HOST
i.e icm/HTTP/admin_0 = PREFIX=/sap/admin,DOCROOT=./admin,AUTHFILE=/myfullpath/icmauth.txt
Please review Online documentation:
http://help.sap.com/saphelp_nw04/helpdata/en/1d/9e0f1737354064b174ac2a39fb7d46/content.htm
If you need to recreate icmauth.txt, you can have webdisp profile to be recreated by running the sapwebdisp command with the bootstrap option, as it will also create user for web administration.
You can use the password that generated by the bootstrap to open the web admin page.

If issue continues, please clarify all the points, as per note 634262. Then provide all the relevant profiles, complete level 3 trace for Webdisp as well as backend ICM trace, together with DIA Workprocess at trace level 2 with activation of component Taskhandler, ICF, IPC, WebGui (see Note 84850), then send to SAP Support for further analysis.
Please always refer the patch history in following notes.
908160 SAP Web Dispatcher 6.40: Patch history
974284 SAP Web Dispatcher 7.00: Patch history
1093023 SAP Web Dispatcher 7.10: Patch history
1336825 SAP Web Dispatcher 7.11: Patch history