Crash, Error, Disconnect, and Blocked-Progress Troubleshooting

Exclude widespread service issues before changing the device.

Check official support, Battle.net status, current notices, and another device or connection.

For a widespread outage, avoid repeated retries and wait for official recovery.

Stop before reinstalling or resetting settings during an official outage.

For expansion-only access failure, isolate license ownership and platform.

Test base-game login separately from expansion-region access.

Isolate temporary conflicts, missing updates, and damaged files safely.

Check restart, OS, game and GPU updates, free space, background conflicts, and file verification.

Try restart, updates, official launcher repair, then category-specific settings reset one at a time.

Stop before character deletion, unofficial repair, or bulk registry changes.

Check DLC installation separately from the base-game update.

Base-game-only users omit DLC checks and use the same device flow.

Locate reproduction at service, home network, or device.

Check wired versus wireless, another connection, router restart, other services, and party-only behavior.

Exit active content, log out, restart equipment, and retest safely in town.

Stop before unsupported port changes or disabling security.

Separate shared War Plan synchronization from general connectivity.

Use a base-game solo town or public event for the same network comparison.

Safely recover tracking, instance, or objective-state mismatch.

Check tracked quest, prerequisites, objective text, floor, party leader, and current known issues.

Try town return, re-track, relog, then safe instance recreation in that order.

Stop before irreversible choices, reward claims, or valuable-item consumption.

Separate expansion quest prerequisites from War Plan or Cube unlocks.

Use the same safe order for base campaign and class quests.

Create a reproducible report without sensitive information.

Collect code, time, version, region, character type, steps, attempted fixes, and images.

Submit the shortest reproduction and results to the matching official support category.

Stop before posting passwords, auth codes, personal data, or full system details publicly.

State edition, purchase platform, and inaccessible expansion feature.

Base-game-only reports state game version and affected content.