Eng. Alessandro Mazzanti: WSUS - Install Internet Explorer 11 (IE11)

Windows Server Update Services (WSUS) lets you download a single copy of the Microsoft product update and cache it on your local WSUS servers. You can then configure your computers to get the update from your local servers instead of Windows Update. For more information about WSUS, see Windows Server Update Services.

To import from Windows Update to WSUS

Open your WSUS admin site. For example, http://WSUSServerName/WSUSAdmin/.

Where WSUSServerName is the name of your WSUS server.
Choose the top server node or the Updates node, and then click Import Updates.
To get the updates, install the Microsoft Update Catalog ActiveX control.
Search for Internet Explorer 11 and add its contents to your basket.
After you're done browsing, go to your basket and click Import.

You can also download the updates without importing them by unchecking the Import directly into Windows Server Update Services box.

To approve Internet Explorer in WSUS for installation

Open your WSUS admin site and check the Review synchronization settings box from the To Do list.
Click Synchronize now to sync your WSUS server with Windows Update, and then click Updates from the navigation bar.
Enter Internet Explorer 11 into the Search Contains box, and then click Apply.
Choose the right version of Internet Explorer 11 for your operating system, and click Approve for installation.
Click each computer group you want to set up for the WSUS server, picking the right approval level, and then click OK.

Related Microsoft Article:

https://msdn.microsoft.com/en-us/library/dn321452.aspx

Otherwise:

In WSUS, click ALL UPDATES (top left) then REFRESH from the Actions Pane (top right)
Sort by APPROVAL or RELEASE DATE or something else you like and scroll to the items in question and approve them