If you’ve seen the message “Could not complete your request because an unknown or invalid JPEG marker type is found”, you’re not alone. This error typically appears while opening, editing, or enhancing your JPEG images in Adobe Photoshop. It arises due to various unexpected reasons. Regardless of the reasons, this warning can be easily fixed. In this guide, I’ll mention the major factors and some quick methods to fix an unknown or invalid JPEG marker type is found.

Taposhi is an expert technical writer with 5+ years of experience. Her in-depth knowledge about data recovery and fascination to explore new DIY tools & technologies have helped many. She has a great interest in photography and loves to share photography tips and tricks with others.