Devolutions/UniGetUI · error · InvalidOperationException

No ready package manager matching

Error message

No ready package manager matching "{managerName}" is available.

What it means

GetManagers throws 'No ready package manager matching "X"' when ready managers exist but none match the requested managerName (matched by public manager id via IpcManagerSettingsApi.MatchesManagerId).

Solutions

1. Use the public manager id returned by the get-managers/list endpoint
2. Drop managerName to let the API match any ready manager when the specific one is optional
3. Verify the named manager is enabled and ready first

Example fix

// before
await IpcPackageApi.InstallPackageAsync(
    new IpcPackageActionRequest { ManagerName = "Winget", PackageId = "git" });
// after
var id = (await GetManagersAsync()).First(m => m.Name == "Winget").Id; // "winget"
await IpcPackageApi.InstallPackageAsync(
    new IpcPackageActionRequest { ManagerName = id, PackageId = "git" });

var validIds = PEInterface.Managers
    .Where(m => m.IsEnabled() && m.IsReady())
    .Select(IpcManagerSettingsApi.GetPublicManagerId)
    .ToHashSet(StringComparer.OrdinalIgnoreCase);
if (!validIds.Contains(managerName))
    throw new ArgumentException($"Unknown manager: {managerName}");

When it happens

Trigger: Passing a managerName that is a typo, a display name, or refers to a disabled/not-ready manager.

Common situations: Client uses the human display name instead of the public id; that manager is disabled; casing/format mismatch.

Related errors

• No known source matching
• No package manager matching
• No ready package managers are available.
• No setting matching " " was found.
• Bundle export only supports .ubundle and .json output files.

AI-assisted analysis of Devolutions/UniGetUI@9b1d7d0eab (2026-08-13). Data as JSON: /api/errors/70ba076b694c1a11. Report an issue: GitHub.

Appendix: source

Thrown at src/UniGetUI.Interface.IpcApi/IpcPackageApi.cs:758

        return loader.Packages.Where(package => MatchesManager(package.Manager, managerName)).ToArray();
    }

    private static IReadOnlyList<IPackageManager> GetManagers(string? managerName)
    {
        var managers = PEInterface.Managers
            .Where(manager => manager.IsEnabled() && manager.IsReady())
            .Where(manager => MatchesManager(manager, managerName))
            .ToArray();

        if (managers.Length == 0)
        {
            if (string.IsNullOrWhiteSpace(managerName))
            {
                throw new InvalidOperationException("No ready package managers are available.");
            }

            throw new InvalidOperationException(
                $"No ready package manager matching \"{managerName}\" is available."
            );
        }

        return managers;
    }

    private static bool MatchesManager(IPackageManager manager, string? requestedManager)
    {
        return IpcManagerSettingsApi.MatchesManagerId(manager, requestedManager);
    }

    private static bool MatchesIdentity(IPackage package, IpcPackageActionRequest request)
    {
        if (!package.Id.Equals(request.PackageId, StringComparison.OrdinalIgnoreCase))
        {
            return false;
        }

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