Module 11 Troubleshooting Group Policy Issues Module Overview

Module 11: Troubleshooting Group Policy Issues

Module Overview • Introduction to Group Policy Troubleshooting • Troubleshooting Group Policy Application • Troubleshooting Group Policy Settings

Lesson 1: Introduction to Group Policy Troubleshooting • Scenarios for Group Policy Troubleshooting • Preparing to Troubleshoot Group Policies • Tools for Troubleshooting Group Policies • Demonstration: Using Group Policy Diagnostic Tools

Scenarios for Group Policy Troubleshooting Common scenarios that require troubleshooting: ü Polices not applied ü Policies are applied but settings are inconsistent

Preparing to Troubleshoot Group Policies Basic troubleshooting steps: ü Check Event Viewer entries Perform basic checks to test network connectivity: use ü diagnostic tools like netdiag, ping ü Ensure that DNS is functioning: use NSlookup Check that the domain controller is functioning and reachable: ü use diagnostic tools like dcdiag, the set command, Kerbtray

Tools for Troubleshooting Group Policies Group Policy troubleshooting tools: Group Policy reporting – RSOP GPResult Gpotool • Gpupdate • Dcgpofix • GPOLog. View • Group Policy log files • Group Policy Management Scripts

Demonstration: Using Group Policy Diagnostic Tools In this demonstration, the instruction will demonstrate the use of: • GPResult in regular and verbose mode • GPOTool • Gpupdate • GPLog. View

Lesson 2: Troubleshooting Group Policy Application • Troubleshooting Group Policy Inheritance • Troubleshooting Group Policy Filtering • Troubleshooting Group Policy Replication • Troubleshooting Group Policy Refresh • Discussion: Troubleshooting Group Policy Configuration

Troubleshooting Group Policy Inheritance Domain Production GPOs Blocked inheritance prevents high level policies from applying to entire subtrees of OUs No GPO settings apply Sales

Troubleshooting Group Policy Filtering Domain GPO Production WMI filter Group Policy filtering may affect only certain users or computers in OUs Sales Mengph Kimyo Group Read and Apply Allow Group Policy Apply Deny Group Policy

Troubleshooting Group Policy Replication • Group Policy objects consist of Group Policy templates and Group Policy containers • GPTs and GPOs replicate using different mechanisms • Replication issues can cause domain controllers to have inconsistent versions of Group Policies • The GPOTool can check for policy consistency across all domain controllers GPT GPC DC 1 File Replication Service Active Directory Replication GPT GPC GPO 1 Version 3 Version 2 DC 2

Troubleshooting Group Policy Refresh If the Group Policy is not refreshing as expected: • Check refresh intervals for users and computers • Verify that the user has logged off and on, or that the computer has been restarted • Check if there are cached credentials because they may delay the effect of Group Policy • Check to see if the Loopback policy is enabled Use gpupdate to: • Manually refresh updated Group Policy settings • Force the refresh of all Group Policy settings • Force a reboot or logoff, if required, to refresh the settings

Discussion: Troubleshooting Group Policy Configuration In this discussion, you will create a flow chart for troubleshooting Group Policy

Lesson 3: Troubleshooting Group Policy Settings • How Client Side Extension Processing Works • Troubleshooting Administrative Template Policy Settings • Troubleshooting Security Policy Settings • Troubleshooting Script Policy Settings • Troubleshooting Software Installation Policy Settings

How Client Side Extension Processing Works • Client side extensions are DLLs that process group policy settings • Some CSEs do not process if a slow link is detected • Some CSEs are always applied and cannot be turned off List of client side extensions: • Security Settings • Administrative Templates • Software installation • Scripts • Folder redirection • Internet Explorer maintenance

Troubleshooting Administrative Template Policy Settings When troubleshooting Administrative Templates, consider that: ü Administrative Templates are either true polices or preferences ü Settings that are true policies are reversed when the policy no longer applies ü Settings that are preferences will tattoo the registry and remain in effect until they are specifically reversed ü The operating system and service pack level determine if the computer can accept a policy setting

Troubleshooting Security Policy Settings When troubleshooting security policy settings, consider that: ü Account policies are passed to clients from the domain controller ü The domain controller receives account policies from a domain level policy ü Security settings come from the GPO that have the highest priority

Troubleshooting Script Policy Settings When troubleshooting script policy settings, consider the following: ü Validate the script ü Ensure that users and computer have access to the script ü Ensure that Group Policy is configured correctly ü Ensure the script is replicating properly ü Use the Group Policy tools to ensure that Group Policy is applied correctly

Lab: Troubleshooting Group Policy Issues • Exercise 1: Troubleshooting Group Policy Scripts • Exercise 2: Troubleshooting GPO Lab-11 B • Exercise 3: Troubleshooting GPO Lab-11 C • Exercise 4: Troubleshooting GPO Lab-11 D Logon information Virtual machine NYC-DC 1, NYCCL 1 User name Administrator Password Pa$$w 0 rd Estimated time: 60 minutes

Lab Review • If a policy at the domain level is set for enforcement, while another policy at the OU level with a conflicting setting also is set to be enforced, which policy setting will the OU clients receive? • If you use group policy to configure the slow-link detection threshold to be zero, what does that indicate?

Module Review and Takeaways • Considerations • Tools • Review questions

Beta Feedback Tool Beta feedback tool helps: • § § § • Collect student roster information, module feedback, and course evaluations. Identify and sort the changes that students request, thereby facilitating a quick team triage. Save data to a database in SQL Server that you can later query. Walkthrough of the tool

Beta Feedback Overall flow of module: • § § Which topics did you think flowed smoothly, from topic to topic? Was something taught out of order? Pacing: • § § § Were you able to keep up? Are there any places where the pace felt too slow? Were you able to process what the instructor said before moving on to next topic? Did you have ample time to reflect on what you learned? Did you have time to formulate and ask questions? Learner activities: • § § § Which demos helped you learn the most? Why do you think that is? Did the lab help you synthesize the content in the module? Did it help you to understand how you can use this knowledge in your work environment? Were there any discussion questions or reflection questions that really made you think? Were there questions you thought weren’t helpful?