There appear to be a relation with those Event Viewer errors:

Faulting application name: Ssms.exe, version: 2014.120.2000.8, time stamp: 0x5306c06d
Faulting module name: KERNELBASE.dll, version: 6.3.9600.18264, time stamp: 0x56e1b34d
Exception code: 0xc0020001
Fault offset: 0x00015b68
Faulting process id: 0x1190
Faulting application start time: 0x01d269efd341ac69
Faulting application path: C:\Program Files (x86)\Microsoft SQL Server\120\Tools\Binn\ManagementStudio\Ssms.exe
Faulting module path: C:\Windows\SYSTEM32\KERNELBASE.dll
Report Id: a4dd6bcb-d5e7-11e6-80d4-001dd8b71e68
Faulting package full name:
Faulting package-relative application ID:

Application: Ssms.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: exception code c0020001, exception address 768B5B68
Stack:


They are usually one after the other.