Scheduled Backups started failing

Hi,

I noticed that all my recent backups have started failing. There is no indication as to what the problem may be and I found no error codes that I could look up.

Here is what I pulled from the log:

Log Name:      CloudBackup
Source:        CloudBackup
Date:          2/1/2016 7:00:04 PM
Event ID:      11
Task Category: None
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      ZZZZZZZZZZZZZZZZZZ
Description:
The backup operation has completed with errors.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="CloudBackup" Guid="{ABB3D988-13D1-4D34-808E-E53A2A84D97F}" />
    <EventID>11</EventID>
    <Version>1</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>1</Opcode>
    <Keywords>0x4000000000000000</Keywords>
    <TimeCreated SystemTime="2016-02-02T00:00:04.746954100Z" />
    <EventRecordID>209</EventRecordID>
    <Correlation />
    <Execution ProcessID="23448" ThreadID="8284" />
    <Channel>CloudBackup</Channel>
    <Computer>ZZZZZZZZZ</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="StopInfo">&lt;?xml version="1.0"?&gt;
&lt;CBJob&gt;&lt;JobType&gt;Backup&lt;/JobType&gt;&lt;JobStatus&gt;&lt;JobState&gt;Aborted&lt;/JobState&gt;&lt;StartFileTime&gt;130988448027781411&lt;/StartFileTime&gt;&lt;EndFileTime&gt;130988448047469541&lt;/EndFileTime&gt;&lt;ErrorInfo&gt;&lt;ErrorCode&gt;1073841873&lt;/ErrorCode&gt;&lt;DetailedErrorCode&gt;-2147467259&lt;/DetailedErrorCode&gt;&lt;ErrorParamList/&gt;&lt;/ErrorInfo&gt;&lt;/JobStatus&gt;&lt;/CBJob&gt;
</Data>
  </EventData>
</Event>

Any idea what this could be?