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ISSUE: Cannot open the client user interface with error "Invalid byte 2 of 2-byte UTF-8 sequence."

Article ID: 8042
Reviewed: 25/06/2021

Product Version: CloudBacko Go 8.5 or above
Operating System: Windows

Problem Description

When opening the CloudBacko Go user interface, the following error message is displayed:

Invalid byte 2 of 2-byte UTF-8 sequence.


This issue can occurs if the CloudBacko Go user settings file (e.g. ~\.obm\config\settings.sys) saved on the client computer is corrupted.


To resolve the issue, remove, then re-create the user settings file on the affected client computer.


Before proceeding to the next step, ensure that you have the encryption key for all backup sets of the affected user. Re-creating the user profile will require you to enter the encryption key for all existing backup sets.

For more details and best practice for managing encryption key, refer to the following article:

FAQ: Best practices for managing encryption key on CloudBacko Go

Refer to the following steps to resolve the issue:

  1. Stop the CloudBacko Go service.

  2. Locate the settings.sys file in the .obm folder at:



    Exact path to the .obm folder is saved in the home.txt file found at:

  3. Rename the settings.sys file to BACKUP_settings.sys.

  4. Login to the CloudBacko Go user interface

    When you click on a backup set, CloudBacko Go will prompt for the encryption key of the existing backup set. You must enter the correct encryption key of each backup set to regain access to them.


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public/issue/invalid_byte_2_of_2-byte_utf-8_sequence_8042.txt · Last modified: 2021/06/25 18:15 by support