The short answer
First check update status for Hotfix 1.0.0.3 (official Version 1273043) or later. The October 21 notice fixes an endless multiplayer-loading black screen for some players and a rare crash during save migration. Check the migration conditions and limits before proceeding; record symptoms that remain after updating separately.
Different symptom or still not fixed? Find the next check →Key facts
- Scope / fix
- Windows PC / Steam; 1.0.0.3, Version 1273043 (October 21)
Find your symptom
Start with your symptom. Skip steps that do not apply to your setup.
| What you see | What to check | Go to |
|---|---|---|
| Multiplayer loading stays black | Compare the symptom after updating | Step 2 |
| Save conversion stops | Review conditions and limits | Step 3 |
Fixes, in order
Continue this issue
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Step 1｜Confirm the version and download completion
Separate the published version from what is installed.
Time: About 3–5 minutes to check; update time varies · Risk: low
- Check Steam for a pending or active update and let the download finish. Record any available game-version display; if it is unclear, do not assume the fix is installed.
- The notice is dated October 21, 2026 and gives Version 1273043 for 1.0.0.3. If you use a later build, compare its official release notes too. Updating does not by itself prove your symptom is resolved.
Results that did not fix the problem help the next reader too.
Step 2｜Separate loading black screens from connection errors
The named fix concerns an endless black screen when loading multiplayer.
Time: About 3–5 minutes to check; update time varies · Risk: low
- Record the starting screen, whose world you are joining, whether the screen stays black or shows an error, and the wait duration. Keep passwords and private server details out of public reports.
- Do not treat authentication, invitation or other connection messages as guaranteed to be fixed by this black-screen change. Avoid unsupported router or security changes.
Results that did not fix the problem help the next reader too.
Step 3｜Check migration conditions and limitations
The launch FAQ says Early Access saves can be converted to the new 1.0 format.
Time: About 3–5 minutes to check; update time varies · Risk: low
- Protect the pre-migration save. Only after confirming its location, close the game and copy it to a separate dated folder while retaining the original. If the location is unknown, ask official support rather than guessing or moving files.
- Migration was improved for invalid additional-backpack entries, but the items blocking conversion are not carried over.
- For a Flame Altar outside the voxel grid, migration corrects its position; the affected base’s water cannot load and needs re-adding as necessary. This is not a statement that all worlds lose water or all items disappear.
Results that did not fix the problem help the next reader too.
Step 4｜Report symptoms that persist after updating
A published fix is not a guarantee for every system.
Time: About 3–5 minutes to check; update time varies · Risk: low
- Record version, OS, solo or multiplayer, host or joining role, and whether this is a black screen, error or migration crash. Leave unknown details unknown.
- Keep existing saves intact; do not delete, overwrite or reset synchronization. Give official support only the needed details and avoid repeated migration tests using your only save.
Results that did not fix the problem help the next reader too.
Avoid
- Do not delete saves, reset sync or disable protection as a generic fix
- Do not use unverified save paths or universal recovery instructions
Important cautions
- No hands-on reproduction or fix effectiveness is claimed. Check official news for later updates.
FAQ
Are the 1.0.0.3 fixes still only planned?
They are listed as fixes in the October 21 hotfix changelog. This guide does not claim hands-on confirmation of improvement.
Will updating fix every multiplayer connection?
No. The loading black screen is a specific symptom; other network or authentication failures are not established as the same cause.
Must I delete an old save and start over?
This guide does not prescribe that. The launch FAQ describes conversion of old saves. Preserve them and distinguish the documented limitations from unrelated missing data.
Does a backup guarantee recovery?
No. Matching copied files is different from successful in-game loading. Confirm the source and retain both the original and earlier backups without overwriting them.
Sources
We checked these official pages and wrote the steps in our own words. Follow the publisher’s page if it has changed.
Official: Hotfix 1.0.0.3 changelogOfficial: launch and save-conversion FAQOfficial newsSteam: Windows PC requirementsEnshroudedJapanese version of this page