Service Backup Exec Server crash with Backup exec 2010 R3

I have exactly the same issue, even from the same date!

I have a virtual machine with Windows Server 2008 R2, Backup Exec 2010 R2 (at that time), completely updated. Language: Italian.

Since 15 February, the service "Backup Exec Server" has started to crash suddenly, even if no jobs are working!

I tried to upgrade it to 2010 R3, but the same problem continues to happen.

I also tried to recover a snapshot image dated 05 January, but now it fails as well (but at that time it worked!)
I tried to upgrade (using the snapshot) again from R2 to R3 without migration, so with a clean setting. But the same problem remains!

The event manager shows following error:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Application Error" />
    <EventID Qualifiers="0">1000</EventID>
    <Level>2</Level>
    <Task>100</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2018-02-20T20:29:18.000000000Z" />
    <EventRecordID>41298</EventRecordID>
    <Channel>Application</Channel>
    <Computer>XXXXXXXX.SRL.ELM.IT.locale</Computer>
    <Security />
  </System>
  <EventData>
    <Data>beserver.exe</Data>
    <Data>13.0.5204.1279</Data>
    <Data>53321a8c</Data>
    <Data>MSVCR80.dll</Data>
    <Data>8.0.50727.6195</Data>
    <Data>4dcdd833</Data>
    <Data>c0000005</Data>
    <Data>000000000001a955</Data>
  </EventData>
</Event>

Unfortunately it is useless to create a rule to restart it in case of crash, because it hungs, until I close all other Backup Exec services. At that point it restarts and works for a while; then it crashes again.

It seems the crash happens quite continuosly if the UI is executed, even if no one is using it.

Attached there is one of the required dump.