'Your session has expired due to an extended period of inactivity' message seen using Enterprise Vault Search

Problem

In rare circumstances when using the Enterprise Vault Search (EVS) with Internet Explorer (IE), a pop up window may be seen after few seconds advising session expiry due to an extended period of inactivity 

Error Message

Session Expired
Your session has expired due to an extended period of inactivity.
Click "OK" to return to Enterprise Vault Search.

Cause

This informational message is generated by IE when a session has been idle for an extended period of time and is released in order to conserve resources. This message is not an error and has no adverse effect. Following the prompt in the message or opening a new EVS session will restore access to the EVS.

Solution

The Internet Explorer options may be configured to disable such session timeout checks, if Group Policy allows such changes.

Note: Any changes to the Internet Explorer Internet Options must be approved by your system administrator and deployed by a Group Policy. If there are any doubts about changing these settings, please consult with your system administrator prior to making these changes. If any of these settings cannot be changed, they are being managed by your system administrator who must then be contacted to make these changes.

To edit the IE internet options to disable session timeout checks, first log on to the workstation as the affected user, then open IE, finally click on Tools | Internet Options and configure as follows:

1. Security Tab | 'Restricted Sites' Zone | Custom level... | Miscellaneous | Launching application and unsafe files: disable | OK.

Miscellaneous

2. For 'Restricted Site' Zone set the registry key for the Privacy settings to 'Block All Cookies' value 00000003 -->

Registry: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\
REG_DWORD: 1A10
Value: 00000003

Please refer to this Microsoft Article about 'Internet Explorer security zones registry entries for advanced users'