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How to resolve 'Service request failed: Access is denied' error in an Ingest instance

Symptoms

You receive the following error when adding or editing an Ingest data source:

Failure

Error in command: 'Add Data Source...'. Service request failed: Access is denied Module: Timextender.ODX.Engine Timextender.ODX.Engine.ODXFaultException

Cause

Check to see if a policy in Windows Defender Exploit Guard is blocking an Ingest Service operation.

Troubleshooting

service log may show the following error:

Failure

Service request failed: System.ComponentModel.Win32Exception (0x80004005): Access is denied at System.Diagnostics.Process.StartWithCreateProcess(ProcessStartInfo startInfo) at DynamicProcessEngine.DynamicProcessClient.StartProcess(String serverName, Boolean x64BitVersion) at DynamicProcessEngine.DynamicProcessClient.StartPipelineServer(Boolean x64BitVersion)

Some configuration on this machine is blocking the Ingest Service from starting new processes and communicating with those.

Examine errors and warnings in Event Viewer:

Application and Services Log

Microsoft -> Windows -> Windows Defender -> Operational

Below is an example warning:

Warning

Microsoft Defender Exploit Guard has blocked an operation that is not allowed by your IT administrator. For more information please contact your IT administrator. ID: 01443614-CD74-433A-B99E-2ECDC07BFC25 Detection time: 2021-11-17T19:36:41.903Z User: <name> Path: C:\Program Files\Timextender\Timextender 20.10.25.64*ExecutionEngine_x64.exe* Process Name: C:\Windows\explorer.exe ......

Resolution

Work with your IT team to review Windows Defender Exploit Guard policies, to whitelist (bypass) Timextender and Ingest Service installation folders.

Reference

Windows Defender Exploit Guard policy

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