StoneX Securities Inc. ended FOREX.com Japan’s MT4 service on 16 October 2026 and confirmed the MT5 migration on 18 October. Pending orders to open new positions did not transfer, so clients need to recreate those instructions in MT5 after establishing access to the new account.[1]
StoneX describes closing and reopening existing positions at their holding prices with no effect on account balance or profit and loss. That is the operator’s account of the conversion; the pending-entry-order exception needs to be checked separately against each client’s intended instructions.[1]
The transition has several separate dates
| Date | Confirmed change |
|---|---|
| 20 June 2026 | New MT4 account applications ended.Source 4 |
| 4 September 2026 | StoneX announced the planned retirement of MT4, citing stronger security as its rationale.Source 3 |
| 10 October 2026 | MT5 passkey authentication began; the notice says SSL-certificate and one-time-password login methods ceased to be accepted.Source 2 |
| 16–18 October 2026 | MT4 service ended on 16 October; the 18 October notice describes the migration and client actions.Source 1 |
Establish access before recreating instructions
- Open MyAccount and confirm the MT5 user ID.
- Activate the MT5 account and set its password.
- Download and install MT5, then sign in and configure a passkey.
- Complete any outstanding registration-information update requested by StoneX; affected clients remain unable to log in until it is completed.
MT5 uses different credentials from MT4. Passkey authentication, introduced on 10 October, uses the relevant device’s biometrics or PIN; the notice says the previous SSL-certificate and one-time-password methods ceased to be accepted. Checking the platform, account identifier and authentication method together helps isolate access problems.[1][2]
Reconcile exposure, orders and the annual record
A practical sequence is to compare migrated positions and balances first, then list the pending entry instructions that need recreating. This separates the economic exposure already held from future orders that could add to it. It is an implementation sequence based on the published migration terms, not an independent review of a customer ledger.
The 2026 MT4 annual report is scheduled by email in November; the MT5 report follows in early 2027. Both may be needed for the calendar-year record.[1]
The notices leave the compatibility of old scripts and individual custom settings unconfirmed. Those settings need their own review after account access and order reconciliation. The service closure concerns FOREX.com Japan; the US business continues to publish separate MT4 access options.[1][5]
Sources & further reading
- MT4 service termination and MT5 migration notice FOREX.com Japan / StoneX Securities Inc. · 18 Oct 2026 · Accessed 20 Oct 2026
- MT5 passkey authentication introduced on 10 October FOREX.com Japan · 10 Oct 2026 · Accessed 20 Oct 2026
- Notice concerning the end of MT4 service FOREX.com Japan · 4 Sep 2026 · Accessed 20 Oct 2026
- MetaTrader 4 account information and application closure FOREX.com Japan · Accessed 20 Oct 2026
- US account login and platform access FOREX.com United States · Accessed 20 Oct 2026