06-13-2026, 12:53 AM
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Backup failed
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06-13-2026, 04:02 AM
Use the Contact Us link from the drop down icon link (top right), and provide them with the details. To save time you should also export and attach the Log file. It is produced from the same icon drop down > Save log file. you will find that they are very responsive.
06-13-2026, 05:26 AM
(This post was last modified: 06-13-2026, 05:27 AM by garioch7.
Edit Reason: fix formatting issues
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@scopio,
Welcome to the Hasleo Backup Forum. I am sorry to hear that your first attempts with the free version of the Hasleo Backup Suite were unsuccessful. This could be due to some issues with your computer, or also with either the source or destination drives. In addition to the excellent advice, you have already received from @Bespoken, it might be helpful to the Hasleo Team if you provided some details about your computer (OS version number) and the hardware specifications. Even though it is the weekend, you might get a reply. As @Bespoken stated, the Hasleo Team is most responsive to user issues. Good luck. Have a great day. Regards, Phil
06-13-2026, 05:52 AM
You probably did this but have you rebooted the computer.
Usual thing to try is to uninstall and reinstall to see if it corrects the problem. Often the last few digits of the error code are related to the Windows error code and this, if valid, would indicate a USB drive issue. The fact it did do the file check OK before backing up indicates at least some portion of the task is working OK but this would be for the source disk only. Things you can try while awaiting a message from Hasleo support which are very good: Try a different USB port, the rear panel ones typically are the best ones to use. Try a different USB cable Try a different USB drive if you have one. Do you have enough free space on an internal drive or a partition on the same drive to make an image of some partition that would fit. This takes the USB subsystem out of the equation. Imaging programs tend make demands on the destination drives that aren't required in typical file copies - huge amounts of data with little or no interruption in the data flow. However, you could do test writes within Windows by copying large files to the USB drive. You could also download a free disk diagnostic program.
06-13-2026, 06:18 AM
Also, this might not help in this particular case, but: Make sure to use the latest version of HBS.
Your screenshot still shows version v.5.6.2.0, which is from January. Current version is v.5.8.2.1 with new features, driver updates and also some bugfixes.
06-13-2026, 10:37 AM
The last 8 digits of the Hasleo error code are usually the Windows error code. 0x000001B1 (A device which does not exist was specified) usually means the disk was removed abruptly or went offline automatically.
This error usually occurs when the target disk is a USB drive. It can be caused by the USB drive functioning unstably or problems with the cable, and we often receive feedback from users about this issue. Here are a few solutions that you can try: 1. Connect the USB drive to another USB port and try again. 2. Connect the USB storage device to an external power supply. 3. Replace the USB cable with a new one 4. Try using another USB drive to see if the same problem exists. Please note that this error code 0x79 is returned when calling the application programming interface (API) provided by Microsoft, which means that it is a kernel-supplied error code, and is therefore accurate.
06-13-2026, 11:37 PM
Thanks all for your responses. I have now updated Hasleo Backup Suite to version 5.8.2.1 and did a system backup to another external drive. The backup was successful which I conclude that the issue was the first external drive that I used!
My system specs are as follow; OS Windows 11 Pro 25h2 64bit 26200.8655 Computer type PC/Desktop Manufacturer/Model Self-build 09/2023 CPU AMD Ryzen 7 7700X 8 Core AM5 Motherboard ASUS TUF GAMING B650-PLUS WIFI DDR5 PCIe 4.0 ATX Memory Corsair Vengeance 32GB 5600MHz AMD EXPO DDR5 Graphics Card(s) Integrated Sound Card Integrated RealTek HD Monitor(s) Displays ASUS VA24DQ 24" (23.8") Monitor, FHD (1920x1080), IPS, 75Hz, Screen Resolution 1920 x 1080 Hard Drives Samsung 990 PRO 2TB M.2 PCIe 4.0 NVMe SSD/Solid State Drive C: WDC WD20 EZRX-00D8PB0 SATA 2Tb E: Disk Device VIDEOS WDC WD20 EZRX-22Z5HBO SATA 2Tb D: Disk Device DATA PSU Evga 650 Bq, 80+ Bronze 650W, Semi Modular Case Fractal Design Define 7 Black Mid Tower PC Gaming Case Cooling 3 x 140 case fans Keyboard Logitech wireless USB Mouse Logitech wireless USB Internet Speed FTTP 74 mbps down 20mbps up Browser Edge Antivirus Malwarebytes Premium and Windows Defender Other Info LG M-DISC WH14NS40 M-DISC Optical drive
06-14-2026, 12:40 AM
@scopio,
Thank you for your computer specs. You have a very capable computer! I am really happy to hear that you resolved your problem. It was also great that @admin took the time on his weekend to analyze your logs, and provide his expert analysis so very promptly. That demonstrates the resolve of the Hasleo Team to provide the best possible customer service. Once again, welcome to the Hasleo Forums. Any issues you might have, please let us know; and, also we would welcome your continuing participation in the Hasleo Backup Forum. Have a great day. Regards, Phil
06-14-2026, 12:50 AM
@scopio,
I'm glad to see that the backup issue has been resolved after upgrading to version 5.8.2.1 and switching to a different external drive. Your troubleshooting points to the original USB drive or its cable as the likely cause. However, please note that the 0x000001B1 (A device which does not exist was specified) error is a relatively random issue. It occurs more frequently on some USB drives, while on others it may rarely or never happen. Therefore, we recommend performing additional tests to ensure the problem is fully resolved. Have a nice weekend! Best regards, |
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