How to Fix the Microsoft Access "Unrecognized Database Format" Error 3343 (Inconsistent State)

In this Microsoft Access tutorial, I will show you how to troubleshoot and resolve the "Unrecognized Database Format" error, ensuring your databases open smoothly and function as intended. This also applies to the "Access has detected that this database is in an inconsistent state" error as well.

ERRATUM
At time index 4:05 the slide should say "Delete the LDB or LACCDB file." Don't delete the ACCDB file. You kinda need that. Thanks to Sami for catching this one.

BECOME A MEMBER:
YouTube:    / @599cd  
or My Site: https://599cd.com/THMember

LEARN MORE:
Unrecognized: https://599cd.com/Unrecognized

PREREQUISITES:
Access Beginner 1: https://599cd.com/ACB1

LINKS:
Backup Access: https://599cd.com/Backup
Compact & Repair: https://599cd.com/Compact
Troubleshooter: https://599cd.com/Trouble
Error Messages: https://599cd.com/ErrorMessages
Fing Network Monitor: https://www.fing.com
Microsoft Article: https://tinyurl.com/ys97ghj9
DevHut Article: https://www.devhut.net/access-bug-dat...

CHECKLIST:
Backup
Compact & Repair
Delete the LDB File
Check Access Versions
Move Back-End to Different Folder
Import Objects into Blank New Database File
Short Filenames with No Spaces
Check Server for Disk Errors
Make Sure Compression is OFF
Test Network Speed
Check Database File Size
Check Free Disk Space
Run Down the Troubleshooter
Rollback Office / Windows Updates

FREE TEMPLATE DOWNLOADS:
TechHelp Free Templates: https://599cd.com/THFree
Blank Template: https://599cd.com/Blank
Contact Management: https://599cd.com/Contacts
Order Entry & Invoicing: https://599cd.com/Invoicing
More Access Templates: https://599cd.com/AccessTemplates

ADDITIONAL RESOURCES:
FREE Access Beginner Level 1: https://599cd.com/Free1
How to Use Access in 30 Minutes: https://599cd.com/30Minutes
$1 Access Level 2: https://599cd.com/1Dollar
Donate to my Tip Jar: https://599cd.com/TipJar
Get on my Mailing List: https://599cd.com/YTML
Contact Me: https://599cd.com/Contact
TechHelp: https://599cd.com/TechHelp
Consulting Help: https://599cd.com/DevNet
Twitter:   / learningaccess  
https://en.wikipedia.org/wiki/Microso...
https://products.office.com/en-us/access
https://microsoft.com/en-us/microsoft...

KEYWORDS:
TechHelp Access 2016, Access 2019, Access 2021, Access 365, Microsoft Access, MS Access, MS Access Tutorial, #msaccess, #microsoftaccess, #help, #howto, #tutorial, #learn, #lesson, #training, #database, Error 3343, Unrecognized Database Format, Inconsistent State, Access database corruption, compact and repair, resolve error 3343, Access back-end file, backup strategies, database recovery, delete .LACCDB file, Access version consistency, import Access tables, server disk errors, decompile Access database, split Access back-end

QUESTIONS:
Please feel free to post your questions or comments below. Thanks.
Live long, and prosper.