[Problem] Reindex blocks on disks

[expert-lister]

Hello

My wallet was synced 2 weeks ago, but today when open wallet i received an error.
Now my wallet isn't sync and start sync from 6 years past!

What happening?!

[achow101]

There was an error with the database, caused by it during down incorrectly. It will reindex the database which can take a while. Your bitcoin is safe.

[expert-lister]

There was an error with the database, caused by it during down incorrectly. It will reindex the database which can take a while. Your bitcoin is safe.

Again 40 GB must be download?

[GriffinHeart]

There was an error with the database, caused by it during down incorrectly. It will reindex the database which can take a while. Your bitcoin is safe.

Again 40 GB must be download?

No, just need to reprocess all the downloaded block info.
Happened to me awhile ago, continued to happen again and again, I just deleted the block database and redownloaded it in relatively the same time as reindexing.

[achow101]

There was an error with the database, caused by it during down incorrectly. It will reindex the database which can take a while. Your bitcoin is safe.

Again 40 GB must be download?

It will not download anything. You already have all of the raw blocks, but it must organize them into a database so that Bitcoin Core can quickly reference data it needs. It will take a few hours, but not as long as downloading.