APP-FND-01542 : This Application Server is not authorized to access this system

Scenario:
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When you are trying to access the Front end URL it is not giving some error. So , you are using http://hostname:port/dev60cgi/f60cgi and trying to login to the server which gives the following error.

Error:
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“APP-FND-01542 : This Application Server is not authorized to access this system. Please contact your System Administrator. ”

Solution:
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Step 1 : Edit the Context file ie) $APPL_TOP/admin/SID_hostname.xml.
Step 2 : Change the Variable : s_appserverid_authentication to be OFF.Step
3 : Run Autoconfig $ cd $COMMON_TOP/admin/scripts/$CONTEXT_NAME$ sh adautocfg.sh

Now, you can test the application login.

Note :
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There are three modes of authentication you can configure your applications by setting the parameter
s_appserverid_authentication to ON :
s_appserverid_authentication to Partial
s_appserverid_authentication to SECURE : activates full server security (SECURE mode)
s_appserverid_authentication to OFF : deactivates server security
By default in 11.5.10, this is set to SECURE. In previous 11i versions, this wasset to OFF.