FreeFileSync Forum

Nobody who can help me, please?

I uninstalled FFS and install again, now I get this error:

"Unable to read database file C:\Users\xxxxx\Desktop\Google Drive\sync.ffs_db
The file content is corrupted. (invalid header)"

I don't know what I can do more? :-(

FreeFileSync is writing all config files including GlobalSettings.xml transactionally, i.e. saving to temporary first then renaming as an atomic operation.

"does not contain a valid configuration" means the file is apparently corrupted (check file content via a text editor). In any case, the data ...

That file contains settings for FFS. Since it's not working correctly anyway, I would just delete it and start fresh. You'll have to "open" your sync configs in FFS for them to show in the panel again


My impression is that, in general, synchronisation does work fine. I would rather not delete ...

Every day I get around 30x the same error message per day (and always twice in a row):

FreeFileSync - Error

The file "C:\Users\xxxxx\AppData\Roaming\FreeFileSync\GlobalSettings.xml" does not contain a valid configuration.

How can I fix this without causing any more troubles?

Thanks for your explanation, I understand it now

From the Manual page
The lock files are only recognized by FreeFileSync and make sure that at most, a single synchronization is running against a certain folder at a time while other instances are queued to wait. This ensures that only consistent sets of files are subject to synchronization. The ...

You can prevent the ffs_lock files being created by setting the LockDirectoriesDuringSync flag to False. But be aware of the risk.

With the LockDirectoriesDuringSync flag set to True, the ffs_lock file is created at the start of an FFS sync, and removed upon its completion.
However, some cloud ...

After a lot of hours I think I managed to get the right configuration.

However, I'm wondering if "sync (1).ffs_lock" and "sync (2).ffs_lock" do need to be always visible in one of my three folders? Or is it possible to hide these two FFS_LOCK-files somehow?

Thanks for your answer @dennisb

So you can't synchronise these 3 maps at the same time?

I have 3 identical folders:

(1) Google Drive
(2) Microsoft OneDrive
(3) Double Drive

My intention now is to use FreeFileSync and RealTimeSync to get all these 3 folders synchronised with each other.

So if something is modified in (1), (2) or (3), I want it to be automatically modified in the ...