VeeamHub Health Check

[HansA]

VBR (13.0.2.29) was able to run VeeamHub Health Check utility without any issues. Next day it fails to run, with the logs showing an MFA error. No MFA is currently or in the past been enabled for this Veeam server. Logs from the previous successful run do not show this error.

Is there a way to reset this error? Server has been rebooted and I've tried creating a new account with admin rights, still getting the same MFA error.

[19.08.2026 14:47:43] INFO Checking VBR MFA Access...
[19.08.2026 14:47:43] INFO Local VBR detected, using Windows authentication (no credentials required)...
[19.08.2026 14:47:43] DEBUG Running local MFA check with Windows auth: C:\Program Files\PowerShell\7\pwsh.exe -NoProfile -ExecutionPolicy Bypass -Command "Import-Module Veeam.Backup.PowerShell -WarningAction Ignore; Connect-VBRServer -Server localhost "
[19.08.2026 14:47:47] DEBUG [Local MFA Check] Output lengths - STDOUT: 0, STDERR: 1169
[19.08.2026 14:47:47] ERROR [Local MFA Check] PowerShell error output:
Unhandled exception. System.TypeInitializationException: The type initializer for 'System.Management.Automation.Configuration.PowerShellConfig' threw an exception.
---> System.IO.FileNotFoundException: Could not load file or assembly 'Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed'. The system cannot find the file specified.
File name: 'Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed'
at System.Management.Automation.Configuration.PowerShellConfig..ctor()
at System.Management.Automation.Configuration.PowerShellConfig..cctor()
--- End of inner exception stack trace ---
at System.Management.Automation.Utils.GetPolicySettingFromConfigFile[T](ConfigScope[] preferenceOrder)
at System.Management.Automation.Utils.GetPolicySetting[T](ConfigScope[] preferenceOrder)
at Microsoft.PowerShell.CommandLineParameterParser.GetConfigurationNameFromGroupPolicy()
at Microsoft.PowerShell.ConsoleHost.ParseCommandLine(String[] args)
at Microsoft.PowerShell.UnmanagedPSEntry.Start(String[] args, Int32 argc)
at Microsoft.PowerShell.ManagedPSEntry.Main(String[] args)

[19.08.2026 14:47:47] ERROR Failed to connect to VBR server. Check the log file for details.
[19.08.2026 14:47:47] INFO [Local MFA Check] Result: Failed (ExitCode=-532462766)
[19.08.2026 14:47:47] ERROR Failed to connect to VBR server. Check the log file for details.