We looked through all 258 entries posted in September's security updates and for each entry, asked four questions:

What is this patch named?
What versions of Windows/Office is it for?

What does it fix?
Any known issues?

Skipping the server-based stuff — that's more the purview of IT professionals — here are the remaining patches you'll probably be looking at.

All of these updates will be installed automatically on your system unless the software is not installed or if you have deferred or blocked Windows Update.

We are very pro-update, it is how you skip glaring security holes and malware, but it never hurts to see what these patches do and highlight which ones might have any related issues that you should be watching out for when you are preparing to update your system.

Adobe Flash Patch

What is this patch named?

Security update for Adobe Flash Player: September 12, 2017

What versions of Windows is it for?

Windows 8.1
Windows RT 8.1
Windows 10 (Initial Release, Version 1511, Version 1607, Version 1703)

What does it fix? According to Adobe, "These updates address two critical memory corruption vulnerabilities that could lead to code execution."

Any known issues? None noted.

Microsoft Edge Patches

What is this patch named? Security Update for Microsoft Edge

What versions of Windows is it for?

KB4038781 - Windows 10 (Initial Release)
KB4038783 - Windows 10 (Initial Release) & Windows 10 (Version 1511)
KB4038782 - Windows 10 (Initial Release) & Windows 10 (Version 1607)
KB4038788 - Windows 10 (Initial Release) & Windows 10 (Version 1703)

What does it fix? Security issues in the Microsoft Edge web browser

Any known issues?

KB4038788

Installing KB4034674 may change Czech and Arabic languages to English for Microsoft Edge and other applications.

Internet Explorer Patches

What is this patch named? Monthly Rollup, IE Cumulative, or Security Update

What versions of Windows is it for?

KB403877 Monthly Rollup - Windows 7 (Service Pack 1)
KB4036586 IE Cumulative - Windows 7 (Service Pack 1)

KB4038792 Monthly Rollup - Windows 8.1
KB4036586 IE Cumulative - Windows 8.1
KB4038792 Monthly Rollup - Windows RT 8.1

KB4038781 Monthly Rollup - Windows 10
KB4038783 Security Update - Windows 10 (Version 1511)
KB4038782 Security Update - Windows 10 (Version 1607)
KB4038788 Security Update - Windows 10 (Version 1703)

What does it fix? Security issues in the Internet Explorer web browser

Any known issues?

KB403877

The WordPad application can sometimes crash on launch after installing KB4025341. Microsoft is working on a resolution and will provide an update in an upcoming release.

KB4038792

NPS authentication may break, and wireless clients may fail to connect. See KB4038792 for work around.

Japanese IME may hang in certain scenarios. Install KB2962409.

KB4038788

Installing KB4034674 may change Czech and Arabic languages to English for Microsoft Edge and other applications.

Windows 10 Patches

What is this patch named? Security Update, Monthly Rollup, or Security Only

What versions of Windows is it for?

KB4038777 Monthly Rollup - Windows 7 (Service Pack 1)
KB4038779 Security Only - Windows 7 (Service Pack 1)

KB4038792 Monthly Rollup - Windows 8.1
KB4038793 Security Only - Windows 8.1
KB4038792 Monthly Rollup - Windows RT 8.1

KB4038781 Security Update - Windows 10 (Initial Release)
KB4038783 Security Update - Windows 10 (Version 1511)
KB4038782 Security Update - Windows 10 (Version 1607)
KB4038788 Security Update - Windows 10 (Version 1703)

What does it fix? Addresses various security updates, system performance/fixes, and quality improvements.

Any known issues?

KB403877

The WordPad application can sometimes crash on launch after installing KB4025341. Microsoft is working on a resolution and will provide an update in an upcoming release.

KB4038792

NPS authentication may break, and wireless clients may fail to connect. See KB4038792 for work around.

Japanese IME may hang in certain scenarios. Install KB2962409.

KB4038788

Installing KB4034674 may change Czech and Arabic languages to English for Microsoft Edge and other applications.

Office Updates

What is this patch named? Security Update or Release Notes

What versions of Office is it for?

KB3213641KB3213646KB3213649  KB4011063 Security Updates - Office 2007 (Service Pack 3)

KB4011089KB3213626KB3213631KB3213638KB4011055KB3213626KB3213631 -  Security Updates - Office 2010 (Service Pack 2)

KB3213564 KB4011103 Security Updates - Office 2013 (Service Pack 1)

KB4011090KB3213564KB4011103 Security Update - Office 2013 RT (Service Pack 1)

KB3203474KB3213551KB4011126KB4011038 Security Updates - Office 2016

KB3212225 Security Update - Office for Mac 2011
Release Notes - Office 2016 for Mac

What does it fix? 

Remote Code execution and provides defense-in-depth updates to help improve security-related features.

Any known issues? None noted.