SWEX Guide: Export Your Summoners War JSON

Open the SWEX releases page on GitHub and download the latest release marked Latest (1.0.0 at the time of writing). For Windows there are two files:

• Summoners-War-Exporter-Setup-1.0.0-win.exe — the installer;
• Summoners-War-Exporter-Portable-1.0.0-win.exe — the portable version, which runs without installing.

Either works. The latest.yml and .blockmap files are update metadata — you don’t need them. Windows may show “Windows protected your PC” for a new download: click More info → Run anyway.

Right-click SWEX and choose Run as administrator, then accept the User Account Control prompt. SWEX needs admin rights to start and stop its proxy: while the proxy runs it points the game’s servers to itself in your hosts file, and it removes that again when you stop it. If it can’t, its Logs show “Could not modify hosts file”.

Click Start Proxy. SWEX asks you to “Select a proxy mode”:

Your choice is saved as Settings → Proxy → Steam Mode, so next time Start Proxy goes straight to Steam Mode. Allow SWEX through Windows Firewall if asked.

SWEX needs its own certificate trusted by Windows to read the game’s encrypted traffic. With the proxy running in Steam Mode:

1. Click Get & Install Cert (Steam). SWEX writes the certificate to its files folder and opens the Windows Certificate Import Wizard.
2. Choose Local Computer and click Next until the wizard finishes.
3. Check that HTTPS mode is on in SWEX Settings (it is by default).

Manual install (fallback)

1. In SWEX click Get Cert; it saves ca.pem in the cert folder inside your SWEX files folder.
2. Press the Windows key, type mmc and press Enter.
3. File → Add/Remove Snap-in → Certificates → Add → Computer account → Local computer → Finish → OK.
4. Right-click Trusted Root Certification Authorities → All Tasks → Import, browse to ca.pem (set the file filter to “All Files”), then Next → Next → Finish.

The certificate lasts about a year, and SWEX warns you after 12 months. When it expires the game shows error H:2000: click Regenerate Cert in SWEX Settings and install the new one the same way.

With the proxy running, launch Summoners War on Steam and log in. As your account loads, SWEX’s profile exporter saves the file and its Logs show “Saved profile data to …”. You’ll find it here:

• The file is overwritten each time you log in, so it is always your latest box.
• Change the folder with Settings → Files Path → Change.
• Want history? Turn on the profile exporter’s Timestamped copy in separate folder option.

Top bar

The Import JSON button next to the file chip (shown until a file is loaded). The chip shows your loaded file’s name, “No JSON loaded” or “Not logged in”.

Account menu

Click your avatar → Import JSON. Use this to re-import once a file is loaded.

Empty pages

The home dashboard (“No account data yet”), My Monsters, the tools and Rune Lens all offer Import JSON until a file is loaded.

Builders

Step 1 of every builder: “Import JSON — Import your SWEX account file to get started.”

Narrow windows & phones

Open the menu (☰) and tap Import JSON; on phones, More → Import JSON.

No JSON file appears after logging in

Make sure SWEX runs as administrator, the proxy was started in Steam Mode before you launched the game, the profile exporter is enabled and HTTPS mode is on. If your Desktop folder is synced by OneDrive, SWEX may be unable to write there: point Settings → Files Path to a folder outside OneDrive.

The game shows error H:2000 or can’t connect

The certificate has expired or isn’t installed. Click Regenerate Cert in SWEX Settings, then install it again with Get & Install Cert (Steam) (or the manual steps above).

“Could not modify hosts file” in the Logs

SWEX isn’t running as administrator, or security software blocked it. Restart SWEX with Run as administrator; a firewall, VPN or extra antivirus can also interfere.

Get & Install Cert (Steam) does nothing

Click Get Cert once to create the certificate folder, then try again — or use the manual install steps.

“Windows protected your PC” warning

Windows shows this for new downloads. Click More info, then Run anyway. SWEX is open source — you can read its code on GitHub.

“Invalid JSON file. Please upload a valid SWEX export.”

The file is JSON but not a SWEX profile export. Choose the <wizard name>-<wizard id>.json file from your SWEX files folder, not a log, CSV or plugin file. In the desktop client the same problem reads “Invalid SWEX JSON — missing wizard_info / unit_list.”

Nothing happens after choosing the file

The file isn’t valid JSON (for example a partial download or a renamed file). Export it again from SWEX and upload the fresh file.

“Import Failed — Account mismatch detected”

Your SWLens account is linked to a different game account. Upload that account’s file, link a second account with Premium, or send a change request from your profile.

There is no Import JSON button in the top bar

Once a file is loaded the button moves into the account menu (click your avatar). On phones it is under More.

“Please import your JSON data first”

A builder or tool needs your account file: import it, then run the optimiser again.

Desktop client: “Your session expired” or “Could not reach the wizard validator”

Sign in again, or check your connection and retry. If it says “Cloud save failed”, the file is still loaded on this device — import it again later to sync it.