peass-ng/PEASS-ng · error · ArgumentException

Resources.Error_TriggerEndBeforeStart

Error message

Resources.Error_TriggerEndBeforeStart

What it means

SetV1TriggerData throws ArgumentException with the localized resource Error_TriggerEndBeforeStart when the trigger's EndDate is earlier than or equal to its BeginDate. A v1 trigger must end after it starts, so the library refuses to bind such trigger data.

Source

Thrown at winPEAS/winPEASexe/winPEAS/TaskScheduler/Trigger.cs:2407

                    v2Trigger.GetType().InvokeMember(key, System.Reflection.BindingFlags.SetProperty, null, v2Trigger, new[] { o });
                }
                catch (System.Reflection.TargetInvocationException tie) when (tie.InnerException != null) { throw tie.InnerException; }
                catch { /* ignored */ }
            }
            unboundValues.Clear();
            unboundValues = null;

            repititionPattern = new RepetitionPattern(this);
            repititionPattern.Bind();
        }

        /// <summary>Assigns the unbound TriggerData structure to the V1 trigger instance.</summary>
        internal void SetV1TriggerData()
        {
            if (v1TriggerData.MinutesInterval != 0 && v1TriggerData.MinutesInterval >= v1TriggerData.MinutesDuration)
                throw new ArgumentException("Trigger.Repetition.Interval must be less than Trigger.Repetition.Duration under Task Scheduler 1.0.");
            if (v1TriggerData.EndDate <= v1TriggerData.BeginDate)
                throw new ArgumentException(Resources.Error_TriggerEndBeforeStart);
            if (v1TriggerData.BeginDate == DateTime.MinValue)
                v1TriggerData.BeginDate = DateTime.Now;
            v1Trigger?.SetTrigger(ref v1TriggerData);
            System.Diagnostics.Debug.WriteLine(v1TriggerData);
        }

        /// <summary>Checks the bind value for any conversion.</summary>
        /// <param name="key">The key (property) name.</param>
        /// <param name="o">The value.</param>
        protected virtual void CheckBindValue(string key, ref object o)
        {
            if (o is TimeSpan ts)
                o = Task.TimeSpanToString(ts);
            if (o is DateTime dt)
            {
                if (key == "EndBoundary" && dt == DateTime.MaxValue || key == "StartBoundary" && dt == DateTime.MinValue)
                    o = null;
                else

View on GitHub (pinned to 53fb989abc)

Solutions

1. Ensure EndBoundary > StartBoundary before registering the trigger
2. Validate parsed DateTime values and culture when building dates from strings
3. Clamp/extend EndDate to at least BeginDate + minimal duration

Example fix

// before
trigger.StartBoundary = start;
trigger.EndBoundary = start; // equals start -> throws
// after
trigger.StartBoundary = start;
trigger.EndBoundary = start > DateTime.Now ? start.AddDays(1) : DateTime.Now.AddDays(1);

if (trigger.EndBoundary <= trigger.StartBoundary)
    trigger.EndBoundary = trigger.StartBoundary.AddDays(1);

try { folder.RegisterTaskDefinition(name, def, ...); }
catch (ArgumentException ex) when (ex.Message == Resources.Error_TriggerEndBeforeStart) { /* fix boundaries and retry */ }

When it happens

Trigger: Creating a trigger with StartBoundary after EndBoundary, or both equal; computing dates dynamically where EndDate ends up <= BeginDate (e.g. zero-length window or timezone/locale parsing issues).

Common situations: Dynamic schedules where EndDate = StartDate + duration with duration=0; strings parsed with the wrong culture flipping day/month so EndDate < StartDate.

Related errors

• Trigger.Repetition.Interval must be less than Trigger.Repeti
• Invalid days of the week element.
• Specified argument was out of the range of valid values. (Pa
• Path not found
• NotImplementedException

AI-assisted analysis of peass-ng/PEASS-ng@53fb989abc (2026-09-02). Data as JSON: /api/errors/278dc6bc17aa9f79. Report an issue: GitHub.