Oh, and by the way, here's the log generated when it crashed, if it helps to solve the problem:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-DistributedCOM" Guid="{1B562E86-B7AA-4131-BADC-B6F3A001407E}" EventSourceName="DCOM" />
<EventID Qualifiers="0">10010</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8080000000000000</Keywords>
<TimeCreated SystemTime="2016-02-19T01:05:57.188364600Z" />
<EventRecordID>660</EventRecordID>
<Correlation />
<Execution ProcessID="956" ThreadID="6020" />
<Channel>System</Channel>
<Computer>DESKTOP-QGAFB2D</Computer>
<Security UserID="S-1-5-21-3977599786-3391934104-1565612696-1001" />
</System>
<EventData>
<Data Name="param1">NLInternal.SharedRecoActivation</Data>
</EventData>
</Event>
Source
Microsoft.Windows.Cortana_cw5n1h2txyewy!ppleae38af2e007f4358a809ac99a64a67c1
Stopped responding and was closed
2/18/16 4:59 PM
Report sent
A problem caused this program to stop interacting with Windows.
Faulting Application Path: C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\RemindersServer.exe
Problem Event Name: MoAppHang
Package Full Name: Microsoft.Windows.Cortana_1.7.0.292_neutral_neutral_cw5n1h2txyewy
Application Name: praid:ppleae38af2e007f4358a809ac99a64a67c1
Application Version: 10.0.14267.1000
Application Timestamp: 56bf29dc
Hang Signature: 0fec
Hang Type: 4194304
OS Version: 10.0.14267.2.0.0.768.101
Locale ID: 4105
Additional Hang Signature 1: 0fec3efe970cb5c5dd1a10f45c3e0f9d
Additional Hang Signature 2: 8361
Additional Hang Signature 3: 83613c93132e51e5d7a87ebfb95b8dc4
Additional Hang Signature 4: 0fec
Additional Hang Signature 5: 0fec3efe970cb5c5dd1a10f45c3e0f9d
Additional Hang Signature 6: 8361
Additional Hang Signature 7: 83613c93132e51e5d7a87ebfb95b8dc4
Bucket ID: c19c84d917c3e9937f829c650ea2d689 (133291856864)