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    • How to Backup Dentrix Database to the Cloud
    • How to Backup Patterson Eaglesoft Dental Software
    • Hyper-V Virtual Machine Backup Walkthrough
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    • Linux Installation Guide (Debian, Ubuntu)
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    • Securing your Backup against Ransomware
    • How to move a backup to a new computer
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    • Add and Rename Storage Vaults
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    • Setting up a New Backup Account (license) in My Dashboard
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    • Random Job Delay – Protected Item Schedule
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  • Troubleshooting
    • Cannot proceed – another task needs to finish using the Storage Vault first
    • Change of hardware causes registration dialog to appear
    • Diagnosing Slow Backup Jobs
    • Error “EFS-encrypted files may be unusable once restored”
    • Error “Media is write protected” backing up OneDrive with VSS
    • Error “operation not permitted” macOS
    • Error “The target path ‘X:\WindowsImageBackup’ already exists – please safely remove this direct...
    • Error backing up item exit status 3 Couldn’t create virtual device set: Unknown error 0x80770005
    • Found packs in index but not appearing on disk. Reindex needed
    • Inactive / Abandoned “Running” Jobs
    • Lost connection to local service
    • Lstat: CreateFile \\?\UNC\ backup: Access is denied.
    • Mount path conflict: Can’t mount path inside real directory
    • OneDrive error “The tag present in the reparse point buffer is invalid”
    • Out of memory
    • Shared Memory Provider: Could not open a connection to SQL Server
    • VSS Error: Device is not ready
    • VSS Error: Couldn’t take snapshot. The shadow copy provider had an unexpected error while trying ...
    • Windows Backup encountered an error when writing data to the backup target.
    • Error “Access is denied” when backing up files and folders on Windows
    • Error “local error: tls: record overflow”
    • Microsoft SQL Server backup encountered a VDI error
    • Network Connectivity Errors
    • How to Locate All EFS Encrypted Files for Windows 10 and Server
    • Couldn’t save folder details: fs.TempFile: Access is denied
    • Couldn’t save Office 365 data for account – The requested user is invalid
    • WARNING Data error (cyclic redundancy check) occurred inside byte range
    • Set-Disk : Access Denied During Disk Image Backup
    • The System State encountered a problem: exit status 0xfffffffc
    • Runtime: VirtualAlloc of xx bytes failed with errno=1455 fatal error: out of memory
    • Disk Image Backup – Checking if device is ready: DeviceIoControl: The request could not be performed
    • Checking if device xx is ready: DeviceIoControl: The request failed due to a fatal device hardware..
    • x509 Certificate has expired or is not yet valid
    • Couldn’t load tree/xyz for subdirectory: tree/xyz not present in any index
    • Optimizing snapshot: not present in any index
    • Reading subdirectories of – Open: /Files/Documents/ operation not permitted
    • file truncated (expected xxxx bytes, got 0)
    • WARNING: Node (xxxx) filename.ext’ collision at position xxxx
    • How to easily find disks with read / write errors in Windows
    • Multiple connections to a server or shared resource error
    • Application failed to start because no Qt platform plugin could be initialized
    • OneDrive The cloud operation is not supported on a read-only volume
    • Hyper-V Error: Backing up exit status 1 (skipping)
  • FAQs
    • Account Devices and Billing
    • How can I restore my files to a new computer?
    • How to reset a backup account password
    • Can’t login to eazyBackup – Login information doesn’t work
    • Cloud Storage and Online Backup Service for Protected Health Information
    • How to cancel your eazyBackup subscription
  • eazyBackup Rebranding
    • Backup Client and Control Panel Branding
    • White Label Email Configuration
  • e3 Object Storage
    • e3 Object Storage Pricing FAQs
    • Manage Billing
    • Delete Account
    • How to configure QNAP Hybrid Backup Sync to S3 Compatible Object Storage
    • How to Use Arq Backup with eazyBackup e3 Object Storage
    • How to use Synology Hyper Backup with eazyBackup e3 Object Storage
    • How to use Duplicati with eazyBackup e3 Object Storage
    • How to use rclone with eazyBackup e3 S3 Compatible Object Storage
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  1. Troubleshooting

Runtime: VirtualAlloc of xx bytes failed with errno=1455 fatal error: out of memory

PreviousThe System State encountered a problem: exit status 0xfffffffcNextDisk Image Backup – Checking if device is ready: DeviceIoControl: The request could not be performed

Last updated 10 months ago

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When performing a backup using the windows desktop application, the backup finishes with an error status message - fatal error: out of memory, and you might see stack trace similar to the following example.

runtime stack:

runtime.throw({0x7ff6567fcfff?, 0xc18f10f000?})

C:/Go1.19.3/src/runtime/panic.go:1047 +0x65 fp=0x904dfffa78 sp=0x904dfffa48 pc=0x7ff655199e65

runtime.sysUsedOS(0xc18d400000, 0x8000000)

C:/Go1.19.3/src/runtime/mem_windows.go:83 +0x1c9 fp=0x904dfffad8 sp=0x904dfffa78 pc=0x7ff655179e29

This kind of error is a result of the application requesting more memory than is currently available on the system.

  • Check the memory usage, and if possible, stop other applications that may be using large amounts of system memory.

  • Check your windows event logs around the time the error occurred in your backup logs

  • In the eazyBackup desktop application, you can optionally edit your Protected Item Schedule and select the option to "prefer temp files over memory". This option will reduce performance, but if upgrading system memory is not an option you can consider this alternative.

  • This issue on rare cases could also be caused by memory fragmentation or other issues with the operating system's memory management.

Technical details of what's happening here:

This error message is a stack trace of a runtime error that occurred in the application which it written in Go. The error occurred in the memory management part of the runtime, specifically in the sysUsedOS() function which is responsible for requesting memory from the operating system. The error indicates that the runtime was unable to allocate a contiguous block of memory of 0x8000000 bytes in size, which is 128 MB.

The stack trace shows that the error occurred in the mheap package, which is responsible for allocating memory for the Go program. The mheap package attempted to allocate a contiguous block of memory by calling the sysUsedOS() function, but the call failed, resulting in the panic.


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