How To Create Custom RMM Remediation Scripts to Correct DNS, Patching, and BitLocker Issues Automatically. Automated remediation is important. Let’s walk through how to use custom RMM scripts to fix DNS issues, resolve Windows patching failures, and enforce BitLocker encryption automatically. Before we begin, be sure to subscribe to NinjaOne’s IT video hub and our YouTube channel for more tech content like this. Why Automated Remediation Matters. In managed environments, recurring DNS failures, stalled Windows updates, and disabled BitLocker encryption can weaken security and increase support volume. Manually fixing these issues does not scale. Automated remediation scripts reduce mean-time-to-repair, standardize fixes, and keep endpoints compliant without constant technician involvement. Using an RMM platform allows these scripts to run on-demand, on a schedule, or in response to alerts. How DNS Issues Are Automatically Corrected. First, DNS misconfigurations are among the most common endpoint problems. PowerShell scripts can flush the DNS cache, reassign DNS servers, and restart the DNS client service to restore name resolution and refresh DNS resolver settings. This clears stale records and restores name resolution quickly. Batch scripts can achieve similar results using tools like ipconfig and netsh, although administrators should account for varying network adapter names, since hardcoded adapter names such as “Ethernet” may cause deployment failures. After remediation runs, administrators can log resolution tests to confirm success and trigger alerts if failures persist. How Patching Failures Are Resolved. Next, patching failures often stem from corrupted update caches or stalled services. PowerShell remediation scripts using the PSWindowsUpdate module can scan for missing updates, install them automatically, and reboot if required. For deeper issues, scripts can reset Windows Update components by clearing the SoftwareDistribution folder and restarting services. Batch-based approaches can also reset update components and trigger detection scans, providing a lightweight option when full automation is not required. How BitLocker Compliance Is Enforced. At the same time, BitLocker misconfigurations present serious security risks. PowerShell scripts can verify encryption status, enable BitLocker on unprotected drives, back up recovery keys, and log encryption status for auditing purposes. On TPM-enabled systems, this process can be fully automated without user interaction when a TPM protector is available and properly configured. Registry-based scripts can enable BitLocker policies for non-TPM devices, although alternative protectors such as startup passwords or USB keys are still required. Centralized Deployment and Best Practices. Finally, these remediation scripts can be deployed through RMM platforms or Group Policy for centralized control, allowing administrators to schedule execution, trigger remediation from alerts, and standardize configurations across managed endpoints. For more information, check out our official blog post on Creating Custom RMM Remediation Scripts to Correct DNS, Patching, and BitLocker Issues Automatically, linked in the description below.