To be specific, you see the message on the screen, saying Some updates were not installed.
While checking for the window, you might see Code 9C59 Windows Update encountered an unknown error.
This Windows update error happens when Windows attempts to install Internet Explorer (IE) 11 or IE10.

Next, lets know how to fix Internet Explorer error 9C59.
Then, the error code 9C59 may disappear.
Step 1: On the error window, tap onReview important updatesandReview optional updates.

Or, go to check for available updates again.
Step 2: Uncheck the Microsoft Internet Explorer 11 update and install all the other updates.
Step 3: After installing these updates, go to install Internet Explorer via Window Update.
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If this cannot help to solve your issue, try the other fixes below.
If you use Windows 7 32-bit, go to https://www.microsoft.com/en-us/download/details.aspx?id=40907.
Step 2: Choose a language and clickDownloadto get the 64-bit offline installer.

If this folder gets corrupted, you will encounter an update failure like code 9C59 IE 11.
To solve this issue, you could delete or rename this folder.
Step 2: Typesfc /scannowand pressEnter.
Step 3: Execute the command DISM /Online /Cleanup-Image /RestoreHealthin the CMD window.
Step 1: PressWin + Rto openRun, typeappwiz.cpland clickOK.
Step 2: Right-click onKasperskyand clickUninstall.
Then, finish the uninstallation by following the wizards on the screen.
Step 4: reset your PC and install Internet Explorer 11.
Final Words
Encounters code 9C59 IE 11 in Windows 7?
Take it easy now and you should easily get rid of the trouble after trying these methods.
If you find other useful workarounds, you’re free to tell us by sending an email.