Windows Task Scheduler Diagnostics

Script Output

•  Exit Code Analysis – Maps Windows Task Scheduler exit codes to probable root causes (credential corruption, concurrent execution conflicts, access denied errors, timeouts, and 30+ other failure patterns)
•  Reliability Metrics – Calculates success rates, tracks consecutive failure streaks, identifies missed runs, and flags tasks that haven’t executed as scheduled
•  Configuration Risk Detection – Identifies problematic settings like disabled retry logic, infinite timeouts, interactive logon dependencies, “Queue New Instance” policies that can cause overruns, and multiple concurrent execution settings
•  Performance Assessment – Tracks average and maximum runtimes to identify long-running tasks, detects high-frequency scheduling that could indicate inefficient design, and flags tasks exceeding your runtime thresholds
•  Weighted Risk Scoring – Assigns Critical/High/Medium/Low/Minimal risk levels based on failure patterns, configuration issues, and execution history

The script analyzes the Microsoft-Windows-TaskScheduler/Operational event log for the time period you specify (default: last 15 days, configurable). You can run it against remote servers, filter by task name patterns, exclude system tasks, or focus only on failed tasks.

Report Formats

•  Primary CSV Report – Main task analysis with columns for task path, state, success rate, failure counts, average runtime, max runtime, risk score, detected issues, and remediation recommendations. Import into Excel or your monitoring system.
•  Event History CSV – Granular event log data showing individual task executions, timestamps, exit codes, and duration. Useful for tracking patterns or debugging specific failures.
•  Interactive HTML Report – Dashboard with summary statistics (total tasks, overall success rate, permission issues, credential failures). Sortable, filterable table with color-coded risk badges. Click any task row to open a detailed modal showing execution schedule, performance metrics, failure breakdown by exit code, detected issues, and specific recommendations.

The HTML report includes filters for risk level, task state, and a “failures only” toggle. All columns are sortable. Search by task name if you’re managing dozens or hundreds of scheduled tasks.