ACE COMBAT 8: WINGS OF THEVE · EVIDENCE-LED PLAYER HELP

Ace Combat 8 Error ST-3100001: Online Connection Help

Understand Ace Combat 8 ST-3100001, check Windows time synchronization and separate ACE COMBAT ONLINE communication errors from local game crashes.

Last checked October 10, 2026 at 18:15 UTC

Quick answer

The official notice associates ST-3100001 with interrupted server communication in ACE COMBAT ONLINE and recommends checking Windows time synchronization. Correcting an inaccurate clock is an official check, not a guaranteed fix for every connection failure. If the application closes with a crash message instead, use PC Crash help.

OfficialACE COMBAT Team evidence

Connection interruption, not a local crash diagnosis

The code identifies the online communication problem covered by the developer notice. It does not establish a server-wide outage, failed GPU or memory leak. Record whether you can still use the menu or campaign when online access fails.

OfficialACE COMBAT Team source

Check and synchronize the Windows clock

Safe generic implementation of the official recommendation: open Windows Settings → Time & language → Date & time, check the time zone and automatic-time setting, then use Sync now if available. Compare the displayed time with a reliable clock. Do not manually falsify the date to bypass access checks.

Official status: Clock check recommended; outcome depends on the cause

Save progress and record the exact error and UTC time.
Check the clock/time zone and synchronize using Windows' normal controls.
Restart the game normally and retry the same online operation once.
If it fails again, record the result and check current official service notices before further attempts.

OfficialACE COMBAT Team source

If the clock is already correct

Use a normal connection check: confirm other services work and compare wired versus Wi-Fi only if available. Restarting a client or router is generic diagnosis, not a proven ST-3100001 fix. Avoid rapid repeated reconnects, VPN prescriptions, registry edits and unofficial patches. An isolated failed login does not prove all servers are down.

What to send to official support

Include platform, region, game version, exact ST-3100001 wording, mode, timestamp, clock-sync outcome and whether campaign play still works. Explain whether another connection reproduces it. Keep local crash messages separate so support can investigate the correct failure boundary.

Bandai Namco source ACE COMBAT Team source

October 9: update plans and matchmaking investigation

The team is preparing an update with schedule and contents still pending. It confirms difficult online matchmaking in some environments and asks players to check Windows 11 and SSD requirements. Unsupported setups are a possible contributing factor, not proof of every ST-3100001 error or local crash. This is guidance, not a released universal fix.

OfficialACE COMBAT Team source

Claim evidence

Connection interruption, not a local crash diagnosisOfficial

Error ST-3100001 — September 30

Check and synchronize the Windows clock — Clock check recommended; outcome depends on the causeOfficial

Error ST-3100001 — September 30

October 9: update plans and matchmaking investigationOfficial

Upcoming updates and ONLINE matchmaking — October 9

How evidence labels work

OfficialConfirmed by the publisher, developer or platform. Announced changes are not automatically live-verified.

Beta VerifiedThe same specific Beta observation is supported by multiple independent sources.

Community ReportedA player report or independent test, not an official universal cause or fix.

UnverifiedInsufficient evidence, conflicting details or an unconfirmed cause.

FixedA scoped issue confirmed resolved; other symptoms may remain.

Sources

Error ST-3100001 — September 30ACE COMBAT Team · Server communication interruption and Windows time synchronization guidanceOpen ACE COMBAT Team source

Bandai Namco support-team contactBandai Namco · Official Online Help Desk entry; use the region appropriate to your purchaseOpen Bandai Namco source

PC Crash Report Thread — October 2ACE COMBAT Team · Official investigation and requested diagnostic information; not a universal fixOpen ACE COMBAT Team source

Upcoming updates and ONLINE matchmaking — October 9ACE COMBAT Team · Investigation and Windows 11/SSD guidance, not a released fixOpen ACE COMBAT Team source

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