Endpoint Backup v2 - Subset of Endpoint Backup v2 Assets Experienced Backup Failures Due to a "system.ntfs_reparse_data: invalid argument" error –2026-06-12 

Summary: Between 2026-06-12 01:00 PM UTC and 2026-06-15 08:00 PM UTC, Endpoint Backup v2 customers experienced an issue where a subset of Endpoint Backup v2 assets experienced failed backups due to error "system.ntfs_reparse_data: invalid argument". 

Root Cause:  

After the 1.14 agent release, we identified a compatibility issue involving certain third-party components that resulted in backup failures for a subset of customers. We quickly applied a temporary workaround, released a permanent fix, and then removed the workaround once the fix was in place. The issue has been resolved, and backup operations are functioning normally.  

Incident Timeline:  

• Identified: 2026-06-12 01:00 PM UTC  

• Public Notification: 2026-06-12 08:57 PM UTC  

• Resolved: 2026-06-15 08:00 PM UTC  

Preventative Measures: To reduce the likelihood and impact of similar incidents in the future, we are taking the following steps.   

• To prevent similar issues in the future, we have implemented a whitelist-based approval process for symlink support, providing additional controls and reducing the likelihood of recurrence.