DMM Not Working: What’s Going On and What to Do
When DMM is not working, the problem can show up in many places. DMM GAME PLAYER won’t open, a game stops downloading, DMM TV refuses to play, the login page keeps looping, a card is declined, or a page says the service isn’t available in your region. Some causes sit on DMM’s side, and many come from your PC, browser, network, or location.
This guide covers each problem using DMM’s own help center, shows how to tell an outage from a local issue, and explains where Planet VPN helps and where it gets in the way.
Why Is DMM Not Working?
DMM.com is a Japanese platform that bundles many services under one account: DMM GAMES and its launcher, DMM TV, e-books, English lessons, shopping, and more. Each service has its own app or player, so a fault in one doesn’t always affect the others. Common causes include an outdated browser or launcher, blocked cookies, security software, an unstable connection, payment problems, and DMM’s region rules, since most services are built for users in Japan.
How to Fix
- Check the maintenance and outage page in DMM’s help center.
- Use a recommended browser with JavaScript and cookies turned on.
- Clear the browser cache and cookies, then sign in again.
- Turn off ad blockers, VPNs, and proxies, then reload.
- Restart your PC or phone, and your router.
Is DMM Down, or Is It Just You?
DMM lists outages and planned work on the maintenance and outage page of its help center. Each notice names the affected service and gets a 【復旧】 (restored) tag once it’s fixed. On 27 October 2026, for example, DMM reported a login problem that lasted a little over two hours. Individual games also announce their own maintenance on their official news pages and X accounts.
Some downtime repeats on a schedule. Point top-ups through internet banking and ATMs stop every second Tuesday of the month between 02:00 and 06:00 Japan time, so a charge attempted then simply fails.
How to Fix
- Open the maintenance and outage page in DMM’s help center.
- Check the news page or official X account of the game you’re playing.
- Try DMM on another device or network.
- Wait for maintenance to end, then restart the app or launcher.
- If only your setup fails, work through the fixes below.
DMM Not Loading
If DMM pages stay blank, images are missing, or buttons do nothing when you click them, the browser is the usual suspect. DMM’s help center names ad-blocking extensions and apps as a common cause of broken pages. It also lists the setups it supports: Windows 11 or macOS 14 Sonoma and later with an up-to-date Chrome, Firefox, Edge, or Safari, and iOS 18 or Android 12 and later on phones.
How to Fix
- Pause ad blockers, or add DMM to their allowlist.
- Update your browser, or switch to a recommended one.
- Make sure JavaScript and cookies are allowed.
- Clear the cache and cookies, then reload the page.
- Test another network to rule out a connection problem.
DMM GAME PLAYER Won’t Open
DMM GAME PLAYER is the launcher for DMM GAMES on PC. When it won’t install, won’t open, freezes, or stops updating, DMM’s help center points to security software, background apps, an install location outside the C: drive, or a shaky Wi-Fi connection.
Very old versions stop working too. In January 2025, DMM said launcher versions 5.3.12 and older could no longer launch or download The Elder Scrolls Online, and asked players to move to 5.3.19 or later.
How to Fix
- Restart your PC, then open the launcher again.
- Run DMMGamePlayerSetup.exe as administrator and install directly on the C: drive.
- Pause security software and close background apps, then retry.
- Switch from Wi-Fi to a wired connection.
- Download the latest version from DMM’s official player page.
Tip: If the launcher still fails, DMM support may ask for its log files. You’ll find them in C:\Users\[your username]\AppData\Roaming\dmmgameplayer5\logs. Send the .log file from the day the problem started.
DMM Games Won’t Launch
Sometimes the launcher opens but the game doesn’t. If clicking Launch Game in My Games does nothing, DMM says proxy settings in Windows Internet Options are a known cause. Error 120000 at launch often follows a wrong PC clock, a moved save folder, or a launcher set to run as administrator. Older PC games may also need DirectX and .NET Framework 3.5 before they start.
How to Fix
- In Internet Options, open Connections, then LAN settings, and clear the automatic configuration and proxy boxes.
- Sync your PC clock in Settings > Time & language > Date & time.
- Untick “Run this program as an administrator” in the launcher’s Compatibility tab.
- Add DMM GAME PLAYER to your security software’s exclusion list.
- Install the DirectX runtime and turn on .NET Framework 3.5 in Windows features.
DMM Game Download Failed
A game that stops downloading partway, or a connection that keeps dropping during a download, usually comes down to the PC or the network. DMM’s help center lists power-saving settings that switch off the network adapter, outdated Windows drivers, and unstable Wi-Fi among the likely causes. A damaged launcher config file can also break downloads until you reinstall.
How to Fix
- Set the Windows power plan to High Performance.
- In Device Manager, stop Windows from turning off your network adapter to save power.
- Update Windows and your drivers through Windows Update.
- Turn on the beta download speed limit in the launcher’s game settings.
- Reinstall the launcher after deleting dmmgame.cnf in AppData\Roaming\dmmgameplayer5.
DMM Login Problems
Every DMM service uses the same DMM account, so one login problem can lock you out of games, DMM TV, and your e-books at once. If the login page keeps reloading, DMM says your browser probably isn’t reading cookies. Sign-ins through Google, LINE, or X can fail on their own, and authenticator codes change every 30 seconds, so a code typed too late gets rejected.
How to Fix
- Clear the cache and cookies, and confirm cookies are turned on.
- Reset your password if DMM says the email or password is incorrect.
- Sign in with email and password if a Google, LINE, or X login fails.
- Enter the newest two-step code shown in your authenticator app.
- Use DMM’s recovery steps if you lost the phone with your authenticator app.
Can’t Create a DMM Account
New sign-ups have their own hurdles. DMM now accepts only email addresses from domains it has verified, so disposable addresses, alias addresses, and unfamiliar domains are refused. DMM has also paused new registrations for a while during security maintenance, while existing accounts kept working as usual.
How to Fix
- Register with a major provider such as Gmail or Yahoo! Mail.
- Avoid temporary, throwaway, or alias email addresses.
- Check the maintenance page for a registration pause.
- Look in your spam folder for the confirmation email.
DMM TV Not Playing
DMM TV is DMM’s video service, included with DMM Premium. When playback fails, you’ll usually see a code starting with DIG-MLIC or DIG-SHAKA, which points to the browser, DRM support, cookies, or the network. If the Premium sign-up screen appears even though you pay, you’re signed out of the app, signed in with a different DMM account, or your monthly payment didn’t go through.
How to Fix
- Turn off any VPN and private browsing before you press play.
- Sign out and back in with the account that holds DMM Premium.
- Disconnect Bluetooth devices and external displays.
- Turn off graphics acceleration in Chrome or Edge if DRM errors continue.
- On a phone, switch between the DMM TV app and the browser.
Tip: If DMM TV still won’t play, open the gear icon below the player and copy the environment info. Pasting it into your support request saves a round of back-and-forth.
DMM Payment Declined
DMM accepts Visa, JCB, American Express, and Diners Club cards, including ones issued outside Japan. A purchase can still fail if the card isn’t accepted for that particular service, your issuer blocks it for security, you’ve reached the limit, the balance is low, the card has expired, or DMM is running maintenance. Point top-ups through the DMM GAMES Charge Center are for Japan only, so they won’t work from abroad.
How to Fix
- Re-register or update the card in your DMM account.
- Check the expiry date, spending limit, and balance.
- Call your card issuer with the date, the amount, and the merchant name “DMM”.
- Try again after any payment maintenance window ends.
- If DMM Premium lapsed, update your payment details to restore DMM TV.
Common DMM Errors
DMM shows a mix of Japanese messages and short codes. These are the ones its help center explains.
| Error | What it means | What to do |
|---|---|---|
| “このサービスはお住まいの地域からはご利用になれません” (This service can’t be used from your region) | DMM sees your connection as coming from outside Japan | Turn off VPNs and proxies, check security software for a built-in VPN, and use a Japanese provider. |
| Error 120000 | DMM GAME PLAYER couldn’t start the game | Sync the PC clock, run the launcher without admin rights, and reinstall it if needed. |
| DIG-MLIC-431 | The browser isn’t reading cookies correctly | Delete DMM’s cookies, then try again. |
| DIG-SHAKA-1001, 1002, 1003, 6007, 6017 | A network error during DMM TV playback | Check firewall and security settings, then restart your router and browser. |
| DIG-SHAKA-4012 | The display connection doesn’t support HDCP | Use an HDCP-compatible screen, or unplug the external monitor. |
| Error 6004 | Some Android TV devices fail DMM TV’s license check | Watch on a different device. |
| 00003-00002-00001 | DMM Player v2 couldn’t play the video | Update DMM Player v2 to version 2.5.1 or later. |
Why Can’t I Access DMM?
Most DMM services are for users in Japan. DMM’s help center lists only a few that work from abroad, such as DMM Online Salon, English lessons, and teamLab Planets TOKYO tickets. DMM TV can’t be used outside Japan, and neither can the Charge Center for DMM GAMES points. FANZA, DMM’s adults-only brand, follows the same Japan-only approach and has its own guide.
Games vary by title. Fan guides report launcher messages such as “area not allowed” or error 801 in blocked regions, while Uma Musume dropped its country block for most of the world in April 2022, according to GameTora. Inside Japan, the region message usually means a VPN, a proxy, a security app’s built-in VPN, or an overseas internet provider makes your connection look foreign. School, office, and public Wi-Fi may also block gaming or video sites.
How to Fix
- Read the full message to tell a region notice from a network block.
- In Japan, turn off VPNs, proxies, and VPN features in security software.
- Compare Wi-Fi with mobile data to find a network that filters DMM.
- Check whether a game is open to your country before you install it.
- Outside Japan, expect DMM’s region rules to apply under its terms.
When a VPN Can Help with DMM
A VPN has a specific job with DMM. In Japan, it encrypts your traffic on hotel, café, or airport Wi-Fi, and it can help when your provider throttles game downloads or a local network filters DMM. Planet VPN’s Japan servers keep your connection inside the country, which matters because DMM checks where you connect from.
A VPN won’t change DMM’s terms, which keep most services for users in Japan, and DMM itself names VPNs as a cause of region errors. It also can’t fix maintenance, a declined card, a wrong password, or launcher bugs. The VPN for DMM page covers setup in more detail.
DMM Not Working With a VPN
DMM’s help center explains that a VPN sends your traffic through a foreign server, so DMM reads your IP address as overseas and blocks the service. Shared VPN addresses, DNS leaks, and security apps that switch on their own VPN lead to the same result. These fixes are for people in Japan who use a VPN for privacy, since DMM’s terms still limit most services to Japan.
How to Fix
- Disconnect the VPN, then reload DMM.
- Use Split Tunneling so DMM GAME PLAYER and your browser skip the VPN.
- If you keep the VPN on, pick a server in Japan and reconnect.
- Clear DMM’s cookies and cache after switching servers.
- Flush your DNS cache and turn on DNS-leak protection.
- Switch protocols if the connection keeps dropping.
Why Is DMM Not Working on My Phone?
On phones, DMM runs in the browser and through separate apps for games and video, and each platform has its own limits. Old system versions, Private Browsing, Screen Time rules, and weak connections cause most problems.
DMM Not Working on iPhone
DMM GAMES STORE, the iPhone app marketplace for DMM games, needs iOS 26.2 or later, a Japanese Apple ID, and a location in Japan. It doesn’t run on iPad. Before you install it, you have to change the Age Restrictions setting in Screen Time, and on iOS 26.5 or earlier the app icon can go dark after a restart.
How to Fix on iPhone
- Update to iOS 26.2 or later, ideally 26.6 or later.
- Install from the DMM GAMES STORE download page in Safari.
- Change Age Restrictions in Screen Time as DMM’s install guide describes.
- Sign in with an Apple ID registered in Japan.
- If the icon goes dark after a restart, follow DMM’s guide for that error.
DMM Not Working on Android
On Android, DMM recommends Android 12 or later with the latest Chrome. The DMM TV app can play where the browser fails. Some Android TV devices show error 6004 because their security level blocks playback, and DMM says it can’t fix that on its side.
How to Fix on Android
- Update Chrome and Android.
- Clear Chrome’s cache and DMM’s cookies.
- Switch between Wi-Fi and mobile data.
- Use the DMM TV app if browser playback fails.
- On an Android TV with error 6004, watch on another device.
How to Prevent DMM Problems in the Future
Keep DMM GAME PLAYER, your browser, and Windows updated, and bookmark DMM’s maintenance page. Register with a mainstream email address and turn on two-step verification for your DMM account. Check that your card works for a service before you buy. If you use a VPN on public Wi-Fi in Japan, set up Split Tunneling so DMM keeps working while the rest of your traffic stays protected.
Conclusion
Fix DMM problems in order. Check the maintenance page, then your browser, cookies, and connection, then the launcher or app, and finally your account and payment. If DMM says it isn’t available in your region, the cause is either a VPN or proxy on your side, or DMM’s Japan-only rules, which no setting can change.
Frequently Asked Questions (FAQs)
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1. Why is DMM not working today?
Check DMM’s maintenance and outage page first, since problems often hit only one service. If nothing is listed, clear the cache and cookies, turn off ad blockers and VPNs, and try another network.
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2. Is DMM down right now?
DMM posts outages in its help center and tags them 【復旧】 once fixed. If DMM fails on every device and network, the problem is likely on DMM’s side. If it works elsewhere, look at your own setup.
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3. Can I play DMM GAMES outside Japan?
It depends on the game. Many DMM services are Japan-only and some launchers block overseas connections, while a few titles accept players abroad. Check the game’s page before you install, and keep in mind that DMM’s terms apply wherever you connect from.
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4. Why does DMM say the service isn’t available in my region?
DMM thinks you’re connecting from outside Japan. If you’re in Japan, turn off VPNs, proxies, and VPN features in security software, and connect through a Japanese internet provider.
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5. Why won’t DMM GAME PLAYER open?
Restart the PC, reinstall the launcher on the C: drive as administrator, pause security software, and update to the latest version. If games won’t start from it, clear the proxy settings in Internet Options and sync your PC clock.
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6. Why is my card declined on DMM?
DMM accepts overseas Visa, JCB, American Express, and Diners Club cards, but each service can set its own rules. Check the limit and expiry date, re-register the card, and ask your issuer about the DMM charge.
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7. Can a VPN fix DMM?
Only in a few cases. A VPN protects you on public Wi-Fi in Japan and can help with local throttling or filtering. It can also trigger DMM’s region error, so pause it or use Split Tunneling when DMM stops working.