So, i have found 3 old jaxx wallets with files "file_0.localstorage"
Could not open database file
Reason: file is not a database
Is there any solution, how do I open these files?
This error indicates that the database you are trying to open has been overwritten. Does this error appear in the three files or one file?
How did you find those files and are you sure that they have balance or you are trying your luck.
If you do not restore these files, it is best to keep a copy of them and make sure that you have saved a copy of the extension, for example this Windows extension C:\Users\<name_here>\AppData\Roaming\Jaxx\Local Storage. Then tell us more details.