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Security Update for Windows KB4556846 Will Not Install

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#1 ·
I have tried installing this update from the Action Center, as well as from the Microsoft website to no avail. How can I get it to install? I have Windows 8.1 64-bit. Thank you!
 
#5 · (Edited)
Often but not always it is because the Servicing Stack update has not been installed, prior to the monthly roll-up.
This problem, if it is that, is often caused by updates not being automatic and the user deciding that he does not need the SSU
See on list of installed update if you have the SSU
https://www.catalog.update.microsoft.com/Search.aspx?q=KB4540725

The details are here
https://support.microsoft.com/en-us...ate-for-windows-8-1-rt-8-1-and-server-2012-r2

and the link to it, if you do not have it, is either on hidden updates in your computer update history or on the catalogue link above.

The actual update you cannot install the KB4556846

https://support.microsoft.com/en-us/help/4556846/windows-8-1-kb4556846
and as you will see on that link
Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest Rollup. SSUs improve the reliability of the update process to mitigate potential issues while installing the Rollup and applying Microsoft security fixes. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.
If you are using Windows Update, the latest SSU (KB4540725) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.
Another possible cause is your anti-virus if it is a third party one and not the included Defender on 8.1
These third party AV`s often cause problems with the roll-ups for security
One solution is to disable the AV whilst downloading the update and installing.
Many of the AV`s do sometimes produce this problem.

If that does not work - I suggest you try here
https://support.microsoft.com/en-gb/help/4027322/windows-update-troubleshooter
 
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#7 ·
#13 ·
I don't remember exactly lol. I started by downloading the actual update itself from Microsoft and then trying to install it, which didn't work. Then I used Microsoft's own troubleshooting tool, which didn't fix the issue, either. Finally, I opened a command prompt and, with guidance from an online tutorial, did a sfc /scannow, which did not work at first. I had to restart my computer a couple times, until I realized I just had to wait for it to finish scanning, which took literally hours upon hours. I think I also did this command prompt before the scan: DISM.exe /Online /Cleanup-image /Restorehealth
 
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