The exact error messages can vary, but the root cause of this issue is that a crash of the DLLHost.exe "COM Surrogate" process is seen in the application log (Event 1000), along with multiple Event 6918 entries in the Enterprise Vault event log.
Log Name: Application
Source: Application Error
Event ID: 1000
Task Category: (100)
Level: Error
Description:
Faulting application name: DllHost.exe, version: 10.0.14393.0, time stamp: 0x57899b69
Faulting module name: libcurl.dll, version: 7.78.0.0, time stamp: 0x61845eaa
Exception code: 0xc0000005
Fault offset: 0x00000000000dbf5d
Faulting process id: 0x4a70
Faulting application start time: 0x01d84ffc4cad1213
Faulting application path: C:\Windows\system32\DllHost.exe
Faulting module path: C:\Program Files (x86)\Enterprise Vault\OST\x64\libcurl.dll
Report Id: 78274951-bcae-40a9-9419-fb0e2aac06a5
Faulting package full name:
Faulting package-relative application ID:
[The Exception Code is either c0000005 or 0xc0000374. The Faulting Module may also be different]
V-437-1000
Log Name: Veritas Enterprise Vault
Source: Enterprise Vault
Event ID: 6918
Task Category: Storage File Watch
Level: Error
Description:
A Collector encountered an error during migration. The Collector will abandon migration for the current run. Migration attempts will continue during future runs
Reason: The server threw an exception. (0x80010105)
PartitionEntryID: 18735178A125AD9439D6543ED21DA605E1q10000evserver1
Secondary Storage Location:
Method: CCollector::ProcessFileForMigration (PFFM/M/SF)
[The Method above may vary]
V-437-6918
Product defect.
This issue has been addressed in the following release:
EV 14.2.2
https://www.veritas.com/content/support/en_US/downloads/update.UPD746990.html