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Suggestions of similar web pages in the event of a navigation error must be disabled.


Overview

Finding ID Version Rule ID IA Controls Severity
V-235768 EDGE-00-000056 SV-235768r766877_rule Medium
Description
This setting allows Microsoft Edge to issue a connection to a web service to generate URL and search suggestions for connectivity issues such as DNS errors. If this policy is enabled, a web service is used to generate URL and search suggestions for network errors. If this policy is disabled, no calls to the web service are made and a standard error page is shown. If this policy is not configured, Microsoft Edge respects the user preference that is set under Services at edge://settings/privacy. Specifically, there is a "Suggest similar pages when a webpage can't be found" toggle, which the user can switch on or off. Note that if this policy has been enabled (AlternateErrorPagesEnabled), the "Suggest similar pages when a webpage can't be found setting" is turned on, but the user cannot change the setting by using the toggle. If this policy is disabled, the "Suggest similar pages when a webpage can't be found" setting is turned off, and the user cannot change the setting by using the toggle.
STIG Date
Microsoft Edge Security Technical Implementation Guide 2022-06-17

Details

Check Text ( C-38987r766875_chk )
The policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Suggest similar pages when a webpage can't be found" must be set to "Disabled".

Use the Windows Registry Editor to navigate to the following key:
HKLM\SOFTWARE\Policies\Microsoft\Edge

If the value for AlternateErrorPagesEnabled is not set to "REG_DWORD = 0", this is a finding.
Fix Text (F-38950r766876_fix)
Set the policy value for "Computer Configuration/Administrative Templates/Microsoft Edge/Suggest similar pages when a webpage can't be found" to "Disabled".