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Common errors

Wesley edited this page Jun 28, 2026 · 15 revisions

Common errors

Use Ctrl+F to find the exact toast or error text.

Placeholders:

  • <platform>: platform name
  • <account>: account id

General

Could not change username

Files under {UserData}\LoginCache\<platform> are locked or cannot be written.

Close the target platform, check antivirus locks, and run as administrator if the data path is protected.

Could not locate logged in user

The login files listed in Platforms.json are missing.

Log into the platform normally, quit cleanly, then use Save Current. Compare the live paths with {UserData}/Platforms.json if the launcher recently updated.

WebView browser process has crashed

WebView2 is missing or damaged.

Repair Microsoft Edge/WebView2 from Windows Settings, or reinstall WebView2 Evergreen.

Another instance is running; IPC forward failed

A second launch could not pass arguments to the running app through the Windows named pipe.

Close the existing instance from the tray, use the open window, or restart the stuck process.

Tray

No tray users saved / empty tray menu

No account has been swapped yet, or the tray recent-account list was cleared.

Swap to an account once. Then configure the per-platform tray count in platform Settings.

The tray is built into TcNo-Acc-Switcher.exe; there is no separate tray app.

Platform errors

Battle.net: BattleTag did not match naming policy

Old BattleTag validation expected Name#1234.

Overwatch stats now use Game statistics, with username transforms defined in GameStats.json.

Epic Games: SU-MD-HSH failed to asynchronously deserialize a manifest

Per Epic support, add this to %LocalAppData%\EpicGamesLauncher\Saved\Config\Windows\Engine.ini:

[Launcher]
ForceNonSslCdn=false

Riot Games: More than one install found

%ProgramData%\Riot Games\RiotClientInstalls.json contains stale install paths.

Remove entries for Riot games you no longer have installed.

Steam: Failed to load steam/config/loginusers.vdf

See FAQ details.

Steam: Could not swap. User ID is missing.

The SteamID is not in loginusers.vdf. The account has not logged in on this PC.

Use Add New, sign in, and enable Remember Password.

Discord: Swap fails or opens the wrong account

The account was saved after Discord was force-killed, or Discord's own logout button was used.

Quit Discord from the tray, then use Save Current again. See Platform Discord.

Still stuck?

  1. Run with --log-level=debug or -v.
  2. Note the exact toast text and platform version.
  3. Use the in-app feedback form with Send log enabled, or open a GitHub issue.
  4. Include steps to reproduce, whether the app ran as administrator, and CrashDump.json if one was created.

Do not paste raw tokens, cookies, account IDs, or private paths into a public issue.

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