Lightroom version: CC 2015 
License: Creative Cloud
Operating system: Windows 7 Business Edition
Version: 6.1 
Application architecture: x64
System architecture: x64
Logical processor count: 4
Processor speed: 3.7 GHz
Built-in memory: 16347.4 MB
Real memory available to Lightroom: 16347.4 MB
Real memory used by Lightroom: 260.4 MB (1.5%)
Virtual memory used by Lightroom: 220.2 MB
Memory cache size: 0.0 MB
Maximum thread count used by Camera Raw: 4
Camera Raw SIMD optimization: SSE2,AVX,AVX2
System DPI setting: 96 DPI
Desktop composition enabled: No
Displays: 1) 2560x1440, 2) 1280x1024, 3) 1280x1024
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
Graphics Processor Info:
AMD Radeon R9 200 Series
Check OpenGL support: Passed
Vendor: ATI Technologies Inc.
Version: 3.3.13474 Core Profile Context 220.127.116.11
Renderer: AMD Radeon R9 200 Series
Application folder: C:\Program Files\Adobe\Adobe Lightroom
Library Path: C:\Users\Game\Pictures\Lightroom\Lightroom Catalog.lrcat
Settings Folder: C:\Users\Game\AppData\Roaming\Adobe\Lightroom
2) Canon Tether Plugin
5) Leica Tether Plugin
6) Nikon Tether Plugin
Config.lua flags: None
Adapter #1: Vendor : 1002
Manually download the update for LR CC 2015.10.1 (the latest version):
Once the download has completed, double-click the downloaded file and then double-click the installer in the folder that opens up.
You need minimum camera raw 9.2 and Lightroom CC 2015.2/6.2 version to use the raw data for Sony A7S II, please refer the below downloads links for Lightroom update CC 2015.10.1
Let us know if that helps.
This Adobe help page Adobe - Adobe Application Manager : For Windows : Adobe Application Manager says:
NOTE: If you are a Creative Cloud member and were advised to download a new copy of Adobe Application Manager, please click on the following URL and download the latest Adobe Creative Cloud desktop application: https://creative.adobe.com/products/creative-cloud
So what happens when you download and install a new copy of the Creative Cloud desktop application from here: Download Adobe Creative Cloud apps | Free Adobe Creative Cloud trial
And then run the LR update installer again after that?
I have exactly the same problem with you, have you solved the problem?
The update fails everytime.