I see there are many similar threads from the past couple of weeks, so I figured I'd throw mine into the mix as well.
Yesterday morning I installed several Windows updates. Since they were completed, I've been unable to log into the game, getting the following error message every time I try:

System info:
Code:
-=-=-=-=-=-=- FFXIV Information -=-=-=-=-=-=-
MyDocument C:\Users\Niki\Documents
FINAL FANTASY XIV - A Realm Reborn Language 1 Region 2
ProxyEnable 0
ProxyServer unspecified
ProxyOverride unspecified
-=-=-=-=-=-=- System Information -=-=-=-=-=-=-
SYSTEM_OS Windows 7 Professional 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_ldr.190612-0600)
SYSTEM_CPU Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz (8 CPUs), ~3.4GHz
SYSTEM_CORE_NUM SYSTEM_CORE_LOGIC 8 SYSTEM_CORE_PHYSICS 4
SYSTEM_BIOS BIOS Date: 01/20/16 20:32:45 Ver: 2.1.3
SYSTEM_LANGUAGE English (Regional Setting: English)
SYSTEM_MEMORY 8130.781MB
SYSTEM_VIRTUAL_MEMORY 8388607.875MB
SYSTEM_PAGE_FILE 16259.707MB
SYSTEM_STORAGE C:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 919.740GB SYSTEM_FREEDISC_SPACE 729.760GB
SYSTEM_DIRECTX_VERSION DirectX 11
SYSTEM_GRAPHICS Radeon RX 580 Series
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY1
SYSTEM_GRAPHICS_CHIP AMD Radeon Graphics Processor (0x67DF)
SYSTEM_GRAPHICS_MAKER Advanced Micro Devices, Inc.
SYSTEM_GRAPHICS_VRAM 8169.391 MB
SYSTEM_GRAPHICS_SHARED_VRAM 3809.391 MB
SYSTEM_GRAPHICS_DAC Internal DAC(400MHz)
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (75Hz)
SYSTEM_GRAPHICS_DRIVER aticfx64.dll,aticfx64.dll,aticfx64.dll,amdxc64.dll,aticfx32,aticfx32,aticfx32,amdxc32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 26.20.12001.11014
SYSTEM_GRAPHICS_DRIVER_DATE 6/26/2019 6:08:36 PM
SYSTEM_GRAPHICS_DRIVER_LANGUAGE English
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_GRAPHICS Radeon RX 580 Series
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY2
SYSTEM_GRAPHICS_CHIP AMD Radeon Graphics Processor (0x67DF)
SYSTEM_GRAPHICS_MAKER Advanced Micro Devices, Inc.
SYSTEM_GRAPHICS_VRAM 8169.391 MB
SYSTEM_GRAPHICS_SHARED_VRAM 3809.391 MB
SYSTEM_GRAPHICS_DAC Internal DAC(400MHz)
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (60Hz)
SYSTEM_GRAPHICS_DRIVER aticfx64.dll,aticfx64.dll,aticfx64.dll,amdxc64.dll,aticfx32,aticfx32,aticfx32,amdxc32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 26.20.12001.11014
SYSTEM_GRAPHICS_DRIVER_DATE 6/26/2019 6:08:36 PM
SYSTEM_GRAPHICS_DRIVER_LANGUAGE English
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_SOUND Speakers (2- High Definition Audio Device)
SYSTEM_SOUND_DEVICE_ID {681220CD-6114-4747-A479-6C432ECBC989}
SYSTEM_SOUND_DEVICE_NAME HdAudio.sys
SYSTEM_SOUND_DRIVER_VERSION 6.01.7601.17514
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 11/20/2010 10:23:47 PM
SYSTEM_SOUND Digital Audio (HDMI) (High Definition Audio Device)
SYSTEM_SOUND_DEVICE_ID {58E9F672-C7B4-4927-A75A-0DE9D6977507}
SYSTEM_SOUND_DEVICE_NAME HdAudio.sys
SYSTEM_SOUND_DRIVER_VERSION 6.01.7601.17514
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 11/20/2010 10:23:47 PM
SYSTEM_INPUT {6F1D2B60-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Mouse
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 3 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6F1D2B61-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 128 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {A8DC4300-E5B8-11E7-8002444553540000}
SYSTEM_INPUT_NAME vJoy Device
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 8 SYSTEM_GAMEPAD_BUTTON 12 SYSTEM_GAMEPAD_FOV 1
SYSTEM_INPUT {6470B210-EA84-11E8-8003444553540000}
SYSTEM_INPUT_NAME Realtek Bluetooth A/V Remote Control Target Device
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {64B97AE0-EA84-11E8-8004444553540000}
SYSTEM_INPUT_NAME Realtek Bluetooth A/V Remote Control Target Device
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 28 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {05A31750-09F6-11E9-8001444553540000}
SYSTEM_INPUT_NAME Gaming Keyboard G910
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 7 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {076D5000-09F6-11E9-8002444553540000}
SYSTEM_INPUT_NAME Gaming Keyboard G910
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {080682C0-09F6-11E9-8003444553540000}
SYSTEM_INPUT_NAME Gaming Keyboard G910
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
-=-=-=-=-=-=- Application Information -=-=-=-=-=-=-
FFXIVLauncher
Technical Support - Post New Thread - Google Chrome
-=-=-=-=-=-=- Install Information -=-=-=-=-=-=-
Cisco WebEx Meetings
Adobe Flash Player 17 ActiveX
Audacity 2.3.1
Google Chrome
Alcor Micro USB Card Reader Driver
LAME v3.99.3 (for Windows)
Mozilla Maintenance Service
OpenAL
Steam
Microsoft Visual C++ 2013 Redistributable (x64) - 12.0.30501
Cisco PEAP Module
Microsoft Visual C++ 2013 x86 Minimum Runtime - 12.0.21005
Reservationless-Plus VoIP
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.4148
Intel(R) USB 3.0 eXtensible Host Controller Driver
AMD Settings
FINAL FANTASY XIV ONLINE
Microsoft Visual C++ 2012 Redistributable (x86) - 11.0.61030
Star Wars: The Old Republic
Microsoft Visual C++ 2017 Redistributable (x86) - 14.13.26020
Google Update Helper
Cisco EAP-FAST Module
REALTEK Wireless LAN and Bluetooth Driver
LibreOffice 5.2.5.1
Microsoft Visual C++ 2017 Redistributable (x64) - 14.14.26429
Microsoft Visual C++ 2017 x86 Additional Runtime - 14.13.26020
Microsoft Visual C++ 2017 x86 Minimum Runtime - 14.13.26020
Microsoft Office
Update for Microsoft .NET Framework 4.7.2 (KB4087364)
Update for Microsoft .NET Framework 4.7.2 (KB4506997)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161
Adobe Refresh Manager
Adobe Reader XI MUI
Cisco LEAP Module
Microsoft Visual C++ 2012 x86 Additional Runtime - 11.0.61030
Microsoft Visual C++ 2012 x86 Minimum Runtime - 11.0.61030
Microsoft Visual C++ 2012 Redistributable (x64) - 11.0.61030
Alcor Micro USB Card Reader Driver
Microsoft Visual C++ 2010 x86 Redistributable - 10.0.40219
Realtek High Definition Audio Driver
Microsoft Visual C++ 2013 Redistributable (x86) - 12.0.30501
Microsoft Visual C++ 2013 x86 Additional Runtime - 12.0.21005
Intel(R) Chipset Device Software
AMD Software
Mozilla Firefox 68.0.1 (x64 en-US)
Intel(R) Network Connections 20.2.3001.0
Baldur's Gate: Enhanced Edition
FINAL FANTASY III
FINAL FANTASY XIII
FINAL FANTASY IV
FINAL FANTASY V
FINAL FANTASY VI
VLC media player
Microsoft Visual C++ 2017 x64 Minimum Runtime - 14.14.26429
Microsoft .NET Framework 4.7.2
Intel(R) Chipset Device Software
Intel(R) Management Engine Components
Microsoft Visual C++ 2010 x64 Redistributable - 10.0.40219
Intel(R) Management Engine Components
Intel(R) Rapid Storage Technology
Intel(R) Management Engine Components
Maxx Audio Installer (x64)
Microsoft Visual C++ 2012 x64 Additional Runtime - 11.0.61030
Intel(R) Rapid Storage Technology
Microsoft Visual C++ 2008 Redistributable - x64 9.0.30729.4148
Microsoft Visual C++ 2008 Redistributable - x64 9.0.30729.6161
Intel(R) Network Connections 20.2.3001.0
Intel® Trusted Connect Service Client
Intel(R) Ready Mode Technology
vJoy Device Driver 2.1.8.38
Dell Edoc Viewer
Intel(R) Management Engine Components
Microsoft Visual C++ 2013 x64 Additional Runtime - 12.0.21005
Microsoft .NET Framework 4.7.2
Microsoft Visual C++ 2013 x64 Minimum Runtime - 12.0.21005
Microsoft Visual C++ 2017 x64 Additional Runtime - 14.14.26429
NVIDIA Install Application
Microsoft Visual C++ 2012 x64 Minimum Runtime - 11.0.61030
Intel(R) ME UninstallLegacy
AMD Settings
Branding64
-=-=-=-=-=-=- Proccess Information -=-=-=-=-=-=-
C:\7b26f4f22b877b48f3b84635\Setup.exe 0000150C
C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe 00001B48
C:\Program Files (x86)\Google\Chrome\Application\chrome.exe 000009C0
C:\Program Files (x86)\Intel\Intel(R) USB 3.0 eXtensible Host Controller Driver\Application\iusb3mon.exe 000009F8
C:\Program Files (x86)\Realtek\Realtek Bluetooth\BTServer.exe 000007F0
C:\Program Files (x86)\Realtek\Realtek Bluetooth\SkypePlugin.exe 00000C34
C:\Program Files (x86)\SquareEnix\FINAL FANTASY XIV - A Realm Reborn\boot\ffxivlauncher.exe 00000338
C:\Program Files (x86)\SquareEnix\FINAL FANTASY XIV - A Realm Reborn\boot\ffxivsysinfo64.exe 00001234
C:\Program Files\AMD\CNext\CNext\AMDRSServ.exe 00000B8C
C:\Program Files\AMD\CNext\CNext\RadeonSettings.exe 00000E20
C:\Program Files\AMD\CNext\CNext\amdow.exe 00000434
C:\Program Files\Intel\Intel(R) Rapid Storage Technology\IAStorIcon.exe 00000E24
C:\Program Files\Waves\MaxxAudio\WavesSvc64.exe 000007D0
C:\Windows\Explorer.EXE 00000680
C:\Windows\SoftwareDistribution\Download\Install\NDP47-KB4506997-x64.exe 00001504
C:\Windows\system32\Dwm.exe 00000668
C:\Windows\system32\MsiExec.exe 000009E0
C:\Windows\system32\SearchFilterHost.exe 00001408
C:\Windows\system32\conhost.exe 00000D9C
C:\Windows\system32\schtasks.exe 00000D94
C:\Windows\system32\taskeng.exe 00000428
C:\Windows\system32\taskhost.exe 000007E8
C:\Windows\system32\wbem\unsecapp.exe 00000C40
C:\Windows\system32\wuauclt.exe 00001BAC
C:\Windows\syswow64\MsiExec.exe 0000190C
I have tried the following in no specific order:
Rolling back to a system restore point prior to the updates.
Uninstalling/reinstalling the latest AMD video drivers.
Uninstalling/reinstalling FFXIV.
I can launch the game in DX9, but it doesn't run well in borderless windowed mode, so I'd like to get the issue with DX11 resolved.