Regedit:
Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Microsoft\Exchange] “AlwaysUseMSOAuthForAutoDiscover”=dword:00000001 [HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Common] [HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Common\Identity] “EnableADAL”=dword:00000001 “Version”=dword:00000001
Source: Microsoft
Excel Options > Advanced > Untick “Ignore other applications the use Dynamic Data Exchange (DDE)”.
Source: Askvg
Uninstall faulty microsoft update: KB3097877
Source: Microsoft
1. Upgrade to 12.5
2. Disable Smooth Typing Animation
Regedit: HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Common
New KEY: Graphics
New DWORD: DisableAnimation value 1
Source: GroovyPost
Run as administrator, then activate.
Source: Microsoft