Failed to back up the file. (0x170027)
Acronis True Image 2020 Build 38530 on Windows 10 Pro Build 19043.1237
I have a file-level Incremental Backup which has been running for months and months problem-free. It includes the local copy of a OneDrive folder.
I am receiving daily "backup task execution failed" notifications:
2021-10-12T09:16:26:647-04:00 18100 I00640000: Writing incremental version to file: OneDrive_inc_b32_s6_v1.tib
2021-10-12T09:16:28:226-04:00 42016 E00170027: Failed to back up file or folder '\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy157\Users\tinius\OneDrive\Arduino Books and Docs\Getting Started in Electronics - Forrest Mims 2021.pdf'.
It may be blocked by another application. Failed to back up the file. (0x170027)
Path = "",
Each day the three-digit number in HarddiskVolumeShadowCopynnn increments by two, 153, 155, 157, etc.
There are no problems with any other files in the OneDrive folders and I have not recently opened the document shown in the error message - i.e. it is not open now.
What is the problem and how can I solve it?
Thanks,


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