Hi all,

Just a tip, I got this error each time I tried to connect to our Access 
db's : Cannot start your application. The workgroup information file is 
missing or opened exclusively by another user.

I searched everywhere, tried everything and the only solution that worked 
for me was to do this:

Instead of your connection string looking like this:
"Provider=Microsoft.Jet.OLEDB.4.0;Password=123456;Data 
Source=E:\Oasis\Clients.mdb;Persist Security Info=True"

Try this:
"Provider=Microsoft.Jet.OLEDB.4.0;Jet OLEDB:Database Password=123456;Data 
Source=E:\Oasis\Clients.mdb;Persist Security Info=True"

Change your 'Password=123456' to 'Jet OLEDB:Database Password=123456', it 
works like a miracle!!

HTH,
Thea

(PS: Thanks Xander Sherry!!)