What does HRESULT 0xC00D106B (NS_E_ASX_INVALID_REPEAT_BLOCK) mean?

NS_E_ASX_INVALID_REPEAT_BLOCK

Understanding NS_E_ASX_INVALID_REPEAT_BLOCK in a Windows Media playlist

NS_E_ASX_INVALID_REPEAT_BLOCK (0xC00D106B) is returned when a REPEAT block has invalid placement, count semantics or child structure.

Distinguish in-memory Playlist state, WPL or ASX parsing, nested-list expansion, Media-object resolution and execution of referenced items. Record what the Player had already completed because later retries often replace the original evidence. The specific rejected condition is a REPEAT block has invalid placement, count semantics or child structure.

Minimal playlist experiment

1. Start from the original call and log 0xC00D106B together with its object and operation phase.
2. Collect the complete REPEAT element, COUNT value, nested ENTRY elements and the parser position of the rejection before changing the machine.
3. Use this single-variable test: replace the loop with one ordinary ENTRY; then reintroduce a finite REPEAT with a single valid child.
4. Repeat on a fresh object if the original predates a configuration, device or resource change.
5. Validate the expected next operation, not just initial open or object creation.

What the result means

Actions that obscure the cause

• changing media codecs when the metafile control structure is invalid.

Technical references

• Windows Media Player SDK
• Windows Media Playlists
• Windows Media Playlist elements
• Managing playlists
• Microsoft HRESULT registry