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To help you understand and remedy access issues,
Policy Intelligence offers the following troubleshooters:
Policy Troubleshooter
VPC Service Controls troubleshooter
Policy Troubleshooter for Chrome Enterprise Premium
Policy Troubleshooter
Preview
— Troubleshooting principal access boundary policies
This feature is subject to the "Pre-GA Offerings Terms" in the General Service Terms section
of theService Specific Terms.
Pre-GA features are available "as is" and might have limited support.
For more information, see thelaunch stage descriptions.
Policy Troubleshooter helps you understand whether a principal
can access a resource. Given a principal, a resource, and a permission,
Policy Troubleshooter examines the allow policies, deny policies,
and principal access boundary (PAB) policies that impact the principal's access.
Then, it tells you whether, based on those policies, the principal can use
the specified permission to access the resource. It also lists the relevant
policies and explains how they affect the principal's access.
To learn how to use Policy Troubleshooter to troubleshoot
IAM allow policies, deny policies, and principal access boundary (PAB)
policies, seeTroubleshooting access.
To learn about the different types of policies that IAM supports,
seePolicy types.
VPC Service Controls troubleshooter
The VPC Service Controls troubleshooter helps you troubleshoot access issues
caused by improperly configuredVPC Service Controls service
perimeters. Given a unique denial ID, the VPC Service Controls
troubleshooter investigates the denial and reports why a service perimeter
denied a request.
Policy Troubleshooter for Chrome Enterprise Premium
The Policy Troubleshooter for Chrome Enterprise Premium helps organizations usingChrome Enterprise Premiumunderstand why an end user is denied access. Policy
Troubleshooter evaluates both your policies and the end user's context—for
example, their location or device details—to determine why access was
denied.
The Chrome Enterprise Premium Policy Troubleshooter is a premium feature and requires a
Chrome Enterprise Premium license.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Access-related troubleshooters\n\nTo help you understand and remedy access issues,\nPolicy Intelligence offers the following troubleshooters:\n\n- Policy Troubleshooter\n- VPC Service Controls troubleshooter\n- Policy Troubleshooter for Chrome Enterprise Premium\n\nPolicy Troubleshooter\n---------------------\n\n\n| **Preview\n| --- Troubleshooting principal access boundary policies**\n|\n|\n| This feature is subject to the \"Pre-GA Offerings Terms\" in the General Service Terms section\n| of the [Service Specific Terms](/terms/service-terms#1).\n|\n| Pre-GA features are available \"as is\" and might have limited support.\n|\n| For more information, see the\n| [launch stage descriptions](/products#product-launch-stages).\n\n\u003cbr /\u003e\n\nPolicy Troubleshooter helps you understand whether a principal can access a resource. Given a principal, a resource, and a permission, Policy Troubleshooter examines the allow policies, deny policies, and principal access boundary (PAB) policies that impact the principal's access. Then, it tells you whether, based on those policies, the principal can use the specified permission to access the resource. It also lists the relevant policies and explains how they affect the principal's access.\n\nTo learn how to use Policy Troubleshooter to troubleshoot\nIAM allow policies, deny policies, and principal access boundary (PAB)\npolicies, see [Troubleshooting access](/policy-intelligence/docs/troubleshoot-access).\n\nTo learn about the different types of policies that IAM supports,\nsee [Policy types](/iam/docs/policy-types).\n\nVPC Service Controls troubleshooter\n-----------------------------------\n\nThe VPC Service Controls troubleshooter helps you troubleshoot access issues\ncaused by improperly configured [VPC Service Controls service\nperimeters](/vpc-service-controls/docs/overview). Given a unique denial ID, the VPC Service Controls\ntroubleshooter investigates the denial and reports why a service perimeter\ndenied a request.\n\nTo learn how to use the VPC Service Controls troubleshooter, see [Diagnosing\nissues by using the VPC Service Controls troubleshooter](/vpc-service-controls/docs/troubleshooter).\n\nPolicy Troubleshooter for Chrome Enterprise Premium\n---------------------------------------------------\n\nThe Policy Troubleshooter for Chrome Enterprise Premium helps organizations using\n[Chrome Enterprise Premium](/chrome-enterprise-premium/docs/overview) understand why an end user is denied access. Policy\nTroubleshooter evaluates both your policies and the end user's context---for\nexample, their location or device details---to determine why access was\ndenied.\n\nThe Chrome Enterprise Premium Policy Troubleshooter is a premium feature and requires a\nChrome Enterprise Premium license.\n\nTo learn how to use Policy Troubleshooter to troubleshoot Chrome Enterprise Premium,\nsee [Troubleshooting by using the Policy Troubleshooter for\nChrome Enterprise Premium](/chrome-enterprise-premium/docs/troubleshooter)."]]