Match the symptom. Do not reinstall Windows first.

Attach never completes

Cause	Move
Place still loading	Wait until you can walk, then attach. Attach guide.
Security software	Exclusion on the folder. Antivirus.
Old ZIP	Grab current notes from changelog.
No elevation	Administrator mode.

Cause	Move
Partial unzip	Delete the folder, extract again with 7-Zip.
Missing runtime	.NET Desktop Runtime.

Process attach looks hostile to heuristics. Confirm the source, then exclusions. Deep dive: false positives.