peass-ng/PEASS-ng · error · ArgumentOutOfRangeException

Array has insufficient capacity to support copy.

Error message

Array has insufficient capacity to support copy.

What it means

ICollection<KeyValuePair<string, string>>.CopyTo throws ArgumentException when the KeyValuePair destination array is too small to receive all name/value pairs (insufficient capacity given the array length and start index). The destination array sizing, not the collection, is at fault.

Source

Thrown at winPEAS/winPEASexe/winPEAS/TaskScheduler/NamedValueCollection.cs:602

                }
            }
            return false;
        }

        bool IDictionary<string, string>.ContainsKey(string key) => Names.Contains(key);

        void ICollection<KeyValuePair<string, string>>.Add(KeyValuePair<string, string> item)
        {
            Add(item.Key, item.Value);
        }

        bool ICollection<KeyValuePair<string, string>>.Contains(KeyValuePair<string, string> item) =>
            ((ICollection<NameValuePair>)this).Contains(new NameValuePair(item.Key, item.Value));

        void ICollection<KeyValuePair<string, string>>.CopyTo(KeyValuePair<string, string>[] array, int arrayIndex)
        {
            if (array.Length < Count + arrayIndex)
                throw new ArgumentOutOfRangeException(nameof(array), @"Array has insufficient capacity to support copy.");
            foreach (var item in ((IEnumerable<KeyValuePair<string, string>>)this))
                array[arrayIndex++] = item;
        }

        bool ICollection<KeyValuePair<string, string>>.Remove(KeyValuePair<string, string> item) =>
            ((ICollection<NameValuePair>)this).Remove(new NameValuePair(item.Key, item.Value));

        IEnumerator<KeyValuePair<string, string>> IEnumerable<KeyValuePair<string, string>>.GetEnumerator()
        {
            foreach (var nvp in this)
                yield return new KeyValuePair<string, string>(nvp.Name, nvp.Value);
        }
    }
}

View on GitHub (pinned to 53fb989abc)

Solutions

1. Size the destination array to at least Count + arrayIndex.
2. Copy via LINQ (Select + ToArray) instead of CopyTo to avoid manual sizing.
3. Copy in batches if the destination array is fixed-size.

When it happens

Trigger: Thrown at winPEAS/winPEASexe/winPEAS/TaskScheduler/NamedValueCollection.cs:602 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of peass-ng/PEASS-ng@53fb989abc (2026-09-02). Data as JSON: /api/errors/8d4eee12eee62dc7. Report an issue: GitHub.