The agent is not completing the tasks

[xsavron]

Good afternoon, AzureDevOpsServer2022.2 is installed on a Windows Server 2022 server, and agent 3.238.0 is installed on another Windows Server 2022 server. The agent is present in the Default agent pool on the https://tfs/ portal, and it is green, so everything is fine. However, when I try to run any build or retrieve code from the repository to my workspace, the agent does nothing and throws an error. In the _diag log, I see the following:

[2025-12-16 10:39:40Z INFO MessageListener] Attempt to create session.
[2025-12-16 10:39:40Z INFO MessageListener] Connecting to the Agent Server...
[2025-12-16 10:39:40Z INFO AgentServer] Establish connection with 100 seconds timeout.
[2025-12-16 10:39:40Z INFO VisualStudioServices] Starting operation Location.GetConnectionData
[2025-12-16 10:39:40Z WARN VisualStudioServices] Authentication failed with status code 401.

in the task progress log by the agent:

##[error]Failed to obtain an authentication token for the running job __default with the Build plan type and the Project Collection Build Service (Kontur-NIIRS) ID.
Pool: Default
Started: Today at 13:42
Duration: 1 h 14 min 47 s

Job preparation settings
ContinueOnError: False
TimeoutInMinutes: 60
CancelTimeoutInMinutes: 5
Expand:
 MaxConcurrency: 0
 ########## System pipeline decorators ##########

 Begin evaluating template 'system-pre-steps.yml'
Evaluating: eq('true', variables['system.debugContext'])
Expanded: eq('true', Null)
Result: False
Evaluating: resources['repositories']['self']
Expanded: Null
Result: False
Finished evaluating template 'system-pre-steps.yml'
********************************************************************************
Template and static variable resolution complete. Final YAML document of the execution environment:
steps: []


 MaxConcurrency: 0
Used timeout variable: 1
system.debug : False

all servers have the same account, the rights to the pool of agents and assemblies are granted, everywhere all rights seem to be granted, but nothing works >.<