The Enterprise Vault Event logs will show the following for the specific index volume:
Type : Error
Event : 41352
Source : Enterprise Vault
Category : Index Volumes Processor
User : N/A
Computer : evserver1.ev.local
Description:
The processing of the Upgrade Sub task has stopped following errors.
Archive name: Smith, John
Task: Upgrade_2022-04-26_05:33:35_PM
Upgrade Sub task ID: 17E45C46D562F4A44ADCA808DF09D0AFB1110000evl_918039
Reason: ContentSource
Error Type: NonCritical
Description: Storage Crawler is not accessible. Archive Id=[17E45C46D562F4A44ADCA808DF09D0AFB1110000ev] HRESULT=0x800706BA
The Application Log will show the following:
Type : Error
Date : 4/26/2022
Time : 11:38:11 AM
Event : 1000
Source : Application Error
Category : Application Crashing Events
User : N/A
Computer : evserver1.ev.local
Description:
Faulting application name: StorageCrawler.exe, version: 14.2.0.1226, time stamp: 0x61a7db19
Faulting module name: ucrtbase.DLL, version: 10.0.14393.2990, time stamp: 0x5caeb859
Exception code: 0xc0000409
Fault offset: 0x000872b2
Faulting process id: 0xabac
Faulting application start time: 0x01d85983a10728c1
Faulting application path: C:\Program Files (x86)\Enterprise Vault\StorageCrawler.exe
Faulting module path: C:\Windows\SYSTEM32\ucrtbase.DLL
Report Id: e08975b5-c576-11ec-818c-f40343c80e68
Faulting package full name:
Faulting package-relative application ID:
There is a defect in the product that can cause StorageCrawler to crash under rare conditions.
This issue has been addressed in Enterprise Vault 14.2.2, available from Downloads.