Windows 10 - IE 11 - Jira does not render navigation bar icons

On Windows 10, using IE 11 specifically, icons are missing from the navigation bar (see attached screenshot). All other browsers and Operating Systems will not exhibit this behavior.

Environment

• Windows 10
• Internet Explorer 11

Steps to reproduce

1. Login to Jira;
2. Along the navigation bar, you will notice the icons are missing;

Expected Results

Icons appear in the navigation bar

Actual Results

Icons are missing (please see screenshot)

Cause

Windows 10 has a default security feature that blocks certain fonts: https://support.microsoft.com/en-us/kb/3053676

Workaround

Disable this feature:

Using Group Policy

1. Open the Local Group Policy Editor;
2. Under Local Computer Policy, expand Computer Configuration, then Administrative Templates > System > Mitigation Options;
3. In the Untrusted Font Blocking setting, you can see the following options:
   • Block untrusted fonts and log events
   • Do not block untrusted fonts
   • Log events without blocking untrusted fonts
4. Select either of the two last options;
5. Restart your computer;

Using Registry Editor

1. Open the Registry Editor (regedit.exe) and go to the following registry subkey:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Kernel
2. If the MitigationOptions key is not there, right-click and add a new QWORD (64-bit) Value, naming it as MitigationOptions;
3. Update the Value data of the MitigationOptions key, again choosing one of the two last options for Jira's icons to work properly:
   • Block untrusted fonts and log events: 1000000000000.
   • Do not block untrusted fonts: 2000000000000.
   • Log events without blocking untrusted fonts: 3000000000000.
     Important: The existing MitigationOptions value should be preserved. For example, if the current value is 1000, the updated value should be 1000000001000.
4. Restart your computer;