Known Issue-"...vshadow.exe" -p \\.\c:' returned non-zero exit status 2

Symptoms: 

Cloudscraper ends up with error that looks alike:

 

Command '"C:\Program Files (x86)\Migrate2iaas\Cloudscraper\Migrate\Migrate\Windows\vss\vshadow\bin\x86_64\6.1\vshadow.exe" -p \\.\c:' returned non-zero exit status 2

Explanation: 

Cloudscraper relies on Microsoft Volume Shadow Snapshot service.

Sometimes the service rejects to perform snapshot. It may happen due to variety of reasons.

Diagnostics: 

Run "cmd" and type:

vssadmin list providers

vssadmin list writers

Possible causes: 

1. Non-system snapshot provider blocks the snapshot.

2. One of snaphsot writers blocks the snapshot.

Solution: 

1. In case "vssadmin list providers" output lists Acronis VSS Provider (but you have no Acronis software installed) you should remove it manually, see https://forum.acronis.com/forum/27806

2. Stop all services (like ISS, MSSQL) related to the listed writers. Restart the migration.