Lync 2013 stopped working after update

Question

Lync starts up fine, but when I click a contact or receive a message, Lync crashes
I already updated and repaired office.
I do have office 2010 and 2013 installed, but 2010 doesn't have Lync so there shouldn't be a conflict there.
Event logs:
Log Name:      Application
Source:        Application Error
Date:          16/10/2014 11:40:51
Event ID:      1000
Task Category: (100)
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      TSS-DXCSJX1.teu.tomra.corp
Description:
Faulting application name: lync.exe, version: 15.0.4659.1001, time stamp: 0x5423b435
Faulting module name: lync.exe, version: 15.0.4659.1001, time stamp: 0x5423b435
Exception code: 0xc0000005
Fault offset: 0x00e70000
Faulting process id: 0x1740
Faulting application start time: 0x01cfe9254143f6df
Faulting application path: C:\Program Files (x86)\Microsoft Office\Office15\lync.exe
Faulting module path: C:\Program Files (x86)\Microsoft Office\Office15\lync.exe
Report Id: 83b07477-5518-11e4-bdc0-005056c00008
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2014-10-16T09:40:51.000000000Z" />
    <EventRecordID>104534</EventRecordID>
    <Channel>Application</Channel>
    <Computer>TSS-DXCSJX1.teu.tomra.corp</Computer>
    <Security />
  </System>
  <EventData>
    <Data>lync.exe</Data>
    <Data>15.0.4659.1001</Data>
    <Data>5423b435</Data>
    <Data>lync.exe</Data>
    <Data>15.0.4659.1001</Data>
    <Data>5423b435</Data>
    <Data>c0000005</Data>
    <Data>00e70000</Data>
    <Data>1740</Data>
    <Data>01cfe9254143f6df</Data>
    <Data>C:\Program Files (x86)\Microsoft Office\Office15\lync.exe</Data>
    <Data>C:\Program Files (x86)\Microsoft Office\Office15\lync.exe</Data>
    <Data>83b07477-5518-11e4-bdc0-005056c00008</Data>
  </EventData>
</Event>
Log Name:      Application
Source:        SideBySide
Date:          16/10/2014 11:40:43
Event ID:      35
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      TSS-DXCSJX1.teu.tomra.corp
Description:
Activation context generation failed for "C:\Program Files (x86)\Microsoft Office\Office15\lync.exe.Manifest".Error in manifest or policy file "C:\Program Files (x86)\Microsoft Office\Office15\UccApi.DLL" on line 1. Component identity found
in manifest does not match the identity of the component requested. Reference is UccApi,processorArchitecture="AMD64",type="win32",version="15.0.0.0". Definition is UccApi,processorArchitecture="x86",type="win32",version="15.0.0.0".
Please use sxstrace.exe for detailed diagnosis.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="SideBySide" />
    <EventID Qualifiers="49409">35</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2014-10-16T09:40:43.000000000Z" />
    <EventRecordID>104515</EventRecordID>
    <Channel>Application</Channel>
    <Computer>TSS-DXCSJX1.teu.tomra.corp</Computer>
    <Security />
  </System>
  <EventData>
    <Data>UccApi,processorArchitecture="AMD64",type="win32",version="15.0.0.0"</Data>
    <Data>UccApi,processorArchitecture="x86",type="win32",version="15.0.0.0"</Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>C:\Program Files (x86)\Microsoft Office\Office15\lync.exe.Manifest</Data>
    <Data>C:\Program Files (x86)\Microsoft Office\Office15\UccApi.DLL</Data>
    <Data>1</Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
    <Data>
    </Data>
  </EventData>
</Event>

Answer 1

Same error here. I just had to re-install windows so it installed a good 300+ updates and no way to know which one could have been the culprit. 
Alexander, do you know what update (KBXXXXXXX) you recently installed? 
Here is my error:
Activation context generation failed for "C:\Program Files (x86)\Microsoft Office\Office15\lync.exe.Manifest".Error in manifest or policy file "C:\Program Files (x86)\Microsoft Office\Office15\UccApi.DLL" on line 1. Component identity
found in manifest does not match the identity of the component requested. Reference is UccApi,processorArchitecture="AMD64",type="win32",version="15.0.0.0". Definition is UccApi,processorArchitecture="x86",type="win32",version="15.0.0.0".
Please use sxstrace.exe for detailed diagnosis.
System
Provider
[ Name]
SideBySide
EventID
35
[ Qualifiers]
49409
Level
2
Task
0
Keywords
0x80000000000000
TimeCreated
[ SystemTime]
2014-10-17T13:55:56.000000000Z
EventRecordID
3786
Channel
Application
Computer
SERVECIG
Security
EventData
UccApi,processorArchitecture="AMD64",type="win32",version="15.0.0.0"
UccApi,processorArchitecture="x86",type="win32",version="15.0.0.0"
C:\Program Files (x86)\Microsoft Office\Office15\lync.exe.Manifest
C:\Program Files (x86)\Microsoft Office\Office15\UccApi.DLL
1