when i open MS Excel i get error side by side configuration

i get this problem "side by side configuration error"
Activation context generation failed for "C:\Program Files (x86)\Microsoft Office\root\Office16\lync.exe.Manifest".Error in manifest or policy file "C:\Program Files (x86)\Microsoft Office\root\Office16\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="". Definition is UccApi,processorArchitecture="x86",type="win32",version="". Please use sxstrace.exe for detailed diagnosis.
Qurban HussainAsked:
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Omar SoudaniSystem Support EngineerCommented:
Go to control panel > programs and features > select microsoft office, press on change and then repair it. Reboot and try to open excel again.
Omar SoudaniSystem Support EngineerCommented:
That should do it!
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