FreeFileSync Two-Way Conflict Example: What Happens to Edits?
Quick answer
If the same file changes independently on both sides since the previous sync, preserve both copies and inspect the conflict rather than guessing which edit should win.
Create a safe reproduction
Use disposable copies of the same sample document in two test folders and run an initial Two Way sync.
Modify both sides
Edit each copy differently and preview the next comparison. Do not run the plan automatically.
Resolve based on content
Open both versions and decide whether to keep one or merge their changes, preserving the originals until confirmed.
Check synchronization history
If the database is missing or the folder pair changed, review the full operation list because conflict detection may differ.
Before you run the job
Use disposable test folders for the first pass. Keep an independent copy of important files, confirm drive identities, and run Compare before Synchronize. A preview is not a substitute for checking the actual destination afterwards.
Related FreeFileSync Windows guides
Source and review notes
This guide explains a focused Windows workflow. Consult the current FreeFileSync developer manual for precise behavior and edition-specific options. Review each planned file operation and test with non-critical files before relying on a procedure.