nextcloud/server · error · Error

Could not register device: Probably already registered

Error message

Could not register device: Probably already registered

What it means

Error "Could not register device: Probably already registered" thrown in nextcloud/server.

Source

Thrown at apps/settings/src/service/WebAuthnRegistrationSerice.ts:33

 * Start registering a new device
 *
 * @return The device attributes
 */
export async function startRegistration() {
	const url = generateUrl('/settings/api/personal/webauthn/registration')

	try {
		logger.debug('Fetching webauthn registration data')
		const { data } = await axios.get<PublicKeyCredentialCreationOptionsJSON>(url)
		logger.debug('Start webauthn registration')
		const attrs = await registerWebAuthn({ optionsJSON: data })
		return attrs
	} catch (e) {
		logger.error(e as Error)
		if (isAxiosError(e)) {
			throw new Error(t('settings', 'Could not register device: Network error'), { cause: e })
		} else if ((e as Error).name === 'InvalidStateError') {
			throw new Error(t('settings', 'Could not register device: Probably already registered'), { cause: e })
		}
		throw new Error(t('settings', 'Could not register device'), { cause: e })
	}
}

/**
 * @param name Name of the device
 * @param data Device attributes
 */
export async function finishRegistration(name: string, data: RegistrationResponseJSON) {
	const url = generateUrl('/settings/api/personal/webauthn/registration')

	const resp = await axios.post(url, { name, data: JSON.stringify(data) })
	return resp.data
}

/**
 * @param id Remove registered device with that id

View on GitHub (pinned to ecdeb153ff)

When it happens

Trigger: Thrown at apps/settings/src/service/WebAuthnRegistrationSerice.ts:33 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of nextcloud/server@ecdeb153ff (2026-08-17). Data as JSON: /api/errors/d6dee331d91ffe1d. Report an issue: GitHub.