Acronis Cyber Protect: Backup to Synology NAS with DSM 7.0-41890 fails with "The credentials for location are not specified"

Symptoms

Backup to a Synology NAS with DSM 7.0-41890 fails with:

The credentials for location are not specified

Example of full error log: click to expand

Error code: 10092557
Fields: {"$module":"disk_bundle_vsa64_27305","path":"\\\\192.168.x.x\\backup\\"}
Message: Location is not available.
------------------------
Error code: 262164
Fields: {"$module":"disk_bundle_vsa64_27305","function":"NtOpenFile","path":"\\\\?\\UNC\\192.168.x.x\\backup\\"}
Message: Access to the file is denied.
------------------------
Error code: 65520
Fields: {"$module":"disk_bundle_vsa64_27305","code":2147943726}
Message: The username or password is incorrect.

Cause

NTLMv1 authentication is disabled by default in DSM 7.0-41890 (see DSM release notes)

Solution

Enable NTLMv1 authentication on NAS: go to DSM Control Panel > File Services > SMB > Advanced Settings > Others and check Enable NTLMv1 authentication.

Knowledge Base

69375: Acronis Cyber Protect: Backup to Synology NAS with DSM 7.0-41890 fails with "The credentials for location are not specified"

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