63888: Acronis Cyber Backup: Activity fails with "The process cannot access the file because it is being used by another process"

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Last update: Thu, 2020-10-08 12:58

Symptoms

Activity fails with the following error:

The process cannot access the file because it is being used by another process

Cause

Acronis Agent cannot access a file which is needed for the performed operation as it is locked by another process.

Troubleshooting

Troubleshooting steps depend on the file that is being locked. To detect which file causes the error, open the activity details in the console and look at the string after "path":

Error code: 23
Module: 4
LineInfo: 0xF35F747B3B21F916
Fields: {"path":"\\\\?\\C:\\HyperV\\AcronisBackup.avhdx","$module":"hv_srv_vsa64_14330","function":"OpenFileW"}
Message: Failed to lock the file.

Scenario 1
The inaccessible file is a snapshot of Hyper-V virtual machine that should be backed up. e.g :
"path":"\\\\?\\C:HyperV\\AcronisBackup.avhdx"

 

Scenario 2
The affected file is a backup archive in .tib or .tibx format.

Example of log:

| error 0x40017: Failed to lock the file.
| line: 0xf35f747b3b21f9ef
| file: e:\381\core\file\windows\winnt_dir.cpp:742
| function: winnt_dir::Remove
| function: DeleteFileW
| path: \\?\UNC\192.168.1.1\backup\Acronis\Location\Acronis-2617B806-C0DA-64C6-B587-31EA53B79A3C-CE62E4AE-7F5A-4460-BC1B-26A9AAF66253A_2019_11_29_07_31_32_591D7.TIB
| $module: disk_bundle_vsa64_12960
|
| error 0xfff0: The process cannot access the file because it is being used by another process
| line: 0xbd28fdbd64edb8f1
| file: e:\381\core\common\error.cpp:307
| function: Common::Error::AddWindowsError
| code: 0x80070020
| $module: disk_bundle_vsa64_12960

Scenario 3

The affected file is a system file during file-level backup:

|Fields: {"$module":"disk_bundle_vsa64_24476","code":2147942432,"function":"CreateFileW","path":"\\\\?\\C:\\Documents and Settings\\Robert\\NTUSER.DAT"}
|Message: The process cannot access the file because it is being used by another process.