How to modify time-out settings in Microsoft IIS when required by Cognos products ?

I) Connection timeout setting

For IIS 6.0:
1.On the web server, click Start, point to "Control Panel", point to "Administrative Tools", and then click Internet Information Services (IIS) Manager.
2.Expand the local computer node, expand "Web Sites", right-click the appropriate website, and then click Properties.
3.Click the "Web Site" tab.
4.In the Connections area, change the value in the "Connection timeout" field, and then click OK.

For IIS 7 to IIS 10:
1.On the web server, click Start, point to "Control Panel", point to "Administrative Tools", and then click Internet Information Services (IIS) Manager.
2.Expand the local computer node, expand "Web Sites", right-click the appropriate website, point to "Manage Web Site", click Advanced Settings.
3.In the Advanced Settings window, expand Connection Limits, change the value in the "Connection time-out" field, and then click OK.


II) Active Server Pages (ASP) setting

For IIS 6.0:
1.On the web server, click Start, point to "Control Panel", point to "Administrative Tools", and then click Internet Information Services (IIS) Manager.
2.Expand the local computer node, expand "Web Sites", right-click the appropriate website, and then click Properties.
3.Click the Home Directory tab, and then click Configuration.
4.In the Application Configuration window, click the Options tab.
5.Change the values in the following fields:
-Session timeout
-ASP script timeout
6.Click OK.

For IIS 7 to IIS 10:
1.On the web server, click Start, point to "Control Panel", point to "Administrative Tools", and then click Internet Information Services (IIS) Manager.
2.Expand the local computer node, expand "Web Sites", select the appropriate website and double-click Session State in the right hand panel.
3.Change the setting for Time-Out.


III) ASP Script Timeout Settings

For IIS 7 to IIS 10:
1.On the web server, click Start, point to "Control Panel", point to "Administrative Tools", and then click Internet Information Services (IIS) Manager .
2.Expand the local computer node, expand "Web Sites", select the appropriate website and double-click ASP in the right side.
3.In the ASP window, expand "Limits Properties" and change the "Script Timeout" value.


IV) Application Pool setting
For IIS 7 to IIS 10:
1.Right-Click /ibmcognos/cgi-bin virtual directory, go to "Manage Application --> Advanced Settings"
2.At the top, take note of the "Application Pool" then close the dialog
3.On the left side, select "Application Pools"
4.On the right side,right-click this application pool and select Advanced Settings
5.In the advanced settings, increase "Idle Time-out (minutes)".


V) CGI Time out
For IIS 7 to IIS 10:
1.Select /ibmcognos/cgi-bin virtual directory, then in the middle part of the window, double-click CGI icon and increase "Time-out"


VI) Time-out on the client side
You can also try this Microsoft technote to increase KeepAliveTimeout on the client side :
https://support.microsoft.com/en-us/kb/813827