When you are using Internet Explorer 11 on Windows 10, you may notice that one or more graphic icons or some fonts are missing from the web page. Confirming this behavior, Microsoft has outlined the reasons for this issue along with solutions.
Icons & Fonts missing in Internet Explorer 11
This problem can occur if your Windows 10 is set to block untrusted fonts or some security/mitigation options have been set. Microsoft’s IE Browser Support team has mentioned that there are three ways you can address this issue.
1] Using Group Policy
This Group Policy setting helps you protect your company from attacks which may originate from untrusted or attacker controlled font files. However, with the rollout of Windows 10 v1703 security configuration baseline, Microsoft has decided to remove the recommendation to enable the “Untrusted Font Blocking” Group Policy setting. So, one of the downsides most visible of blocking downloaded and embedded fonts is graphic icons going missing as many web sites rely on them, and blocking them can substantially diminish usability.
To fix this problem, configure the Allow Font Downloads IE Setting on the Internet, Restricted Zone (On by default) via GPO and add the affected Web sites to the Trusted Sites or Local Intranet Zone, here:
Computer Configuration\Administrative Templates\Windows Components\Internet Explorer\Internet\Control Panel\Security Page\Internet Zone\
In the right-side, double-click on Allow font downloads and select Enabled.
This policy setting allows you to manage whether pages of the zone may download HTML fonts. If you enable this policy setting, HTML fonts can be downloaded automatically. If you enable this policy setting and Prompt is selected in the drop-down box, users are queried whether to allow HTML fonts to download. If you disable this policy setting, HTML fonts are prevented from downloading.
Save the settings and exit.
This policy setting will affect the value of the following Registry key:
HKLM or HKCU \Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3
2] Using Registry Editor
This can also occur if the Untrusted Font Blocking mitigation setting is enabled. Run REGEDIT and navigate to the following key:
Create a DWORD with name MitigationOptions_FontBocking* and value 1000000000000.
Restart the system and see.
3] Disabling Antivirus and seeing
If the above suggestions do not help in resolving the missing icons issue in Internet Explorer 11 on Windows 10 try and disable your antivirus application. Sometimes, it is also known to prevent the Fonts & Icons from displaying in the IE11 browser.
For more details you may visit MSDN.