HelpThe same help is in the app, under Help

Help and common questions

Short answers about how Just Share works.

Getting started

How does Just Share work?

Choose a folder to share and Just Share gives you a share code. Send the code to the person you want to share with. They enter it in Just Share on their PC, you approve them, and the files transfer directly from your computer to theirs. If you add or change files later, their copy updates automatically.

What is a share code?

A share code is a unique code that Just Share creates for each folder you share. Anyone you send it to can request access to that folder. Each code only works for one folder.

Do both computers need to be on?

Yes. Files transfer directly from the sharer’s computer, so it needs to be on with Just Share running. If either computer goes offline, the transfer resumes from where it stopped.

What are the system requirements?

A PC running 64-bit Windows 10 or Windows 11. Both you and the person you’re sharing with need Just Share, which is available from the Microsoft Store.

Can I share individual files instead of a whole folder?

Yes. Select the files you want and only those are shared. Nothing else in the same folder is visible, and new files added next to them stay private.

What happens if I change files after sharing?

Just Share detects the changes and sends them to everyone connected. When a large file changes, only the changed parts are sent again.

Why is Just Share still running after I close the window?

It keeps running in the system tray, next to the clock, so your shares stay available. To close it completely, right-click the tray icon and choose Quit. It only starts with Windows if you turn that option on in Settings.

Privacy and security

Is it private?

Yes. Your files are encrypted and sent directly between the two computers. They are never stored on a server. A public peer-to-peer network helps the computers find each other. It can see your IP address, as any online service can, but never your files, their names or your share code.

Who can access my files?

Only people who have the share code, and only after you approve them. Just Share asks you to approve each new person unless you turn that off for the folder. You can remove someone at any time, which blocks their computer. To make sure they can’t reconnect, change the share code as well.

What can the people I share with see about me?

The name you gave your computer in Settings, and your IP address, which is needed to connect the two computers. People receiving the same share can see the same details about each other, because they can download from one another.

Can other people change my files?

Only if you share the folder as Two-way and give them the editing share code. The standard share code is download-only and can never change your files.

What happens if two people edit the same file?

The most recent change is kept on every computer and the other version is replaced. If you would rather keep both versions, turn on that option in the folder’s settings.

How do I know files arrived correctly?

Every file is verified when it arrives to confirm it is identical to the original. A file only appears in the folder once it has passed that check. If it fails, it is downloaded again automatically.

How do I know I am letting in the right person?

Each request to join shows a check code. Ask the person to read out the check code on their screen, for example over the phone. If it matches the one on your screen, the request is coming from their computer and not from someone else using the same name. You can then mark that computer as verified.

Can I make a share code that only works once?

Yes. When you create a share, you can copy a share code that works once and expires after 24 hours. In a folder’s settings, under Limited share codes, you can also create share codes with your own limit on uses or an expiry date.

Can sharing stop by itself?

Yes. A folder can stop sharing once everyone has all the files, or after a set time of an hour, a day or a week. You can resume it whenever you like.

Can I lock Just Share?

Yes. In Settings you can have Just Share ask for Windows Hello (your fingerprint, face or PIN) each time it opens. Anything you are sharing or receiving carries on while it is locked.

Streaming and libraries

What is a library?

A library is a folder of films, shows or music that people can stream but not download. They can browse it and play anything in it, and nothing is saved to their PC. You choose this option when you first share the folder, and it can’t be changed afterwards.

How does streaming work?

Open a folder’s Library tab and press play. The video streams directly from the sharer’s computer. Original quality plays the file as it is. Lower qualities and Auto are converted on the sharer’s computer while you watch, which helps on slower connections. The built-in speed test recommends the best quality for your connection.

What is a watch party?

A watch party lets several people watch the same video at the same time from different places. Open a video and choose Start watch party. Everyone in the folder is invited, and when the host plays, pauses or skips, playback stays in sync for everyone who joined.

Where do subtitles come from?

From the sharer. Subtitle files stored next to a video or in a Subs folder (.srt, .vtt, .ass, .ssa) are sent to viewers automatically, along with subtitle tracks built into the video. Each viewer chooses their own language, text size and timing.

Where do posters and descriptions come from?

Your own artwork is always used first. Online lookup is optional and off by default. If the person sharing the library turns it on, only film and show titles (and the year, for films) are sent from their computer. TV shows get posters and episode details from TVmaze, and films get a description from Wikipedia. Viewers receive these from the sharer and never connect to those services.

What are the keyboard shortcuts in the player?

Space or K to play and pause, Left and Right to skip 10 seconds, Up and Down to change the volume, M to mute, C to turn subtitles on or off, F for full screen, and Esc to close the player.

Speed and large folders

What do the speed limits do?

Speed limits stop Just Share from using your whole internet connection. You can limit upload speed, download speed, or a single folder, and schedule different limits for different times of day. If both you and the other person set a limit, the lower one applies.

What does “recipients share with each other” mean?

When several people are downloading the same folder, they can also download files from each other. This reduces the load on the sharer’s connection, and lets people finish downloading even if the sharer goes offline.

Can it handle very large folders?

Yes. It has been tested with folders containing 500,000 files. Before a download starts, Just Share checks that there is enough free disk space.

Does it work without an internet connection?

Yes. Two computers on the same local network can share with each other without an internet connection.

Ready to try it?

Just Share is for Windows 10 and 11, from the Microsoft Store.

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