Solved Run-time error '3031': Not a valid password

[theDBguy]

Alright, thanks for the quick reply. Now I know why it cant save my data.

What can't save your data? Data should be stored in the BE, not the FE, which is what I thought we were talking about here.

 

[poh99]

Sorry, what I meant was I added auto datetime (i set as not visible) and I recreate my backend. But I did not recreate the accde so my backend did not save the datetime

 

[gemma-the-husky]

You need to save your existing accdb, and create a new accde
You really want to have a virgin unused copy of the accdb, in the event of any problems. You don't want to be trying to reuse the accdb and find it's corrupt.

I save multiple archive versions of databases so I can go back to an earlier version if necessary. maybe to recover code that was deleted in error.
mydbs_v1.1.accdb
mydbs_v1.2.accdb
mydbs_v1.3.accdb

 

[poh99]

You need to save your existing accdb, and create a new accde
You really want to have a virgin unused copy of the accdb, in the event of any problems. You don't want to be trying to reuse the accdb and find it's corrupt.

I save multiple archive versions of databases so I can go back to an earlier version if necessary. maybe to recover code that was deleted in error.
mydbs_v1.1.accdb
mydbs_v1.2.accdb
mydbs_v1.3.accdb

Thank you for the advice

 

[isladogs]

I don't believe there was any corruption
The problem was just that you hadn't saved the BE password when you created the link

Below are the results of a query on the MSysObjects system table before & after I relinked the table

The query SQL is

SELECT Name, Type, Flags, Connect, Database
FROM MSysObjects
WHERE Database Is Not Null;

The Connect field is used to store the connection details - type of file (MSAccess) & password (123)
However it was blank in the file you uploaded so clicking the linked table originally gave the 'not a valid password' error message.

EDIT: Obscured the Database path at the request of the OP