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Installing Visual Basic 6 "downgraded " Jet 4.0 to Jet 3.5. How to fix?

All,

I was working at a client's site when I installed Visual Basic 6 on a
machine at their request. Existing applications on this machine had
specified version 4.0 of the Jet OLEDB provider in a data source string
in their config files. After installing VB 6, they stopped working,
producing the error "3220: The supplied provider is different from the
one already in use. Changing their configuration files to specify
version 3.5.1 fixes the problem.

I would prefer the machine to be at version 4.0 of Jet. Any ideas? I
have tried the following:

1. Installing the latest MDAC update.
2. Installing the latest Jet 4.0 service pack.
3. Installing service pack 6 for Visual Studio.
4. Uninstalling Visual Basic 6.0's Jet component/option.
5. Uninstalling Visual Basic 6.0 altogether.

None of these seem to have had any effect. Does anyone know how to
"re-upgrade" this machine so that the 4.0 Jet engine is available?

Thanks,

Brian

Nov 13 '05 #1
13 8388
Brian-

This should help. I went through this as well.

http://support.microsoft.com/default...b;en-us;271908

-HTH

Matt

<bj******@yahoo .com> wrote in message
news:11******** *************@f 14g2000cwb.goog legroups.com...
All,

I was working at a client's site when I installed Visual Basic 6 on a
machine at their request. Existing applications on this machine had
specified version 4.0 of the Jet OLEDB provider in a data source string
in their config files. After installing VB 6, they stopped working,
producing the error "3220: The supplied provider is different from the
one already in use. Changing their configuration files to specify
version 3.5.1 fixes the problem.

I would prefer the machine to be at version 4.0 of Jet. Any ideas? I
have tried the following:

1. Installing the latest MDAC update.
2. Installing the latest Jet 4.0 service pack.
3. Installing service pack 6 for Visual Studio.
4. Uninstalling Visual Basic 6.0's Jet component/option.
5. Uninstalling Visual Basic 6.0 altogether.

None of these seem to have had any effect. Does anyone know how to
"re-upgrade" this machine so that the 4.0 Jet engine is available?

Thanks,

Brian

Nov 13 '05 #2
On 31 Oct 2005 10:25:36 -0800, bj******@yahoo. com wrote:

¤ All,
¤
¤ I was working at a client's site when I installed Visual Basic 6 on a
¤ machine at their request. Existing applications on this machine had
¤ specified version 4.0 of the Jet OLEDB provider in a data source string
¤ in their config files. After installing VB 6, they stopped working,
¤ producing the error "3220: The supplied provider is different from the
¤ one already in use. Changing their configuration files to specify
¤ version 3.5.1 fixes the problem.
¤
¤ I would prefer the machine to be at version 4.0 of Jet. Any ideas? I
¤ have tried the following:
¤
¤ 1. Installing the latest MDAC update.
¤ 2. Installing the latest Jet 4.0 service pack.
¤ 3. Installing service pack 6 for Visual Studio.
¤ 4. Uninstalling Visual Basic 6.0's Jet component/option.
¤ 5. Uninstalling Visual Basic 6.0 altogether.
¤
¤ None of these seem to have had any effect. Does anyone know how to
¤ "re-upgrade" this machine so that the 4.0 Jet engine is available?

Is this happening to a DataEnvironment class? If so the RunPromptBehavi or of the Connection object
should be set to adPromptNever.
Paul
~~~~
Microsoft MVP (Visual Basic)
Nov 13 '05 #3
I did try downloading the latest MDAC, then running the Jet 4.0 SP 8
install. That didn't seem to help, although I'll try again using the
exact set of steps that they specify.

Thanks.

Nov 13 '05 #4
Yes, I believe I did use the DataEnvironment on this project (it's been
a long time since I wrote the code). However, it worked fine under Jet
4.0 prior to installing VB 6, and it works fine under Jet 3.5.1 after
installing VB 6.0, just not under 4.0 after installing VB 6.

Why would changing this property help? I'll try it when I return to
their site, but I'm curious as to why this would help.

Nov 13 '05 #5

<bj******@yahoo .com> wrote in message
news:11******** **************@ g43g2000cwa.goo glegroups.com.. .
Yes, I believe I did use the DataEnvironment on this project (it's been
a long time since I wrote the code). However, it worked fine under Jet
4.0 prior to installing VB 6, and it works fine under Jet 3.5.1 after
installing VB 6.0, just not under 4.0 after installing VB 6.

Why would changing this property help? I'll try it when I return to
their site, but I'm curious as to why this would help.


I am curious too.

I think it basically forces the program to ignore the warning and go on to
use the 'other' provider.

Are you also using DAO? Some DAO controls need to have DAO 3.51 installed as
well. It comes with the Jet 4 packages but is not often registered
correctly.

-ralph
Nov 13 '05 #6
I don't think that could be an issue for me since this code runs fine
on a fresh Windows 2000 box that does not have Jet 3.5.1 on it, as long
as I specify the 4.0 version of the Jet OLEDB provided in the config
file for the application.

Nov 13 '05 #7
<bj******@yahoo .com> wrote in message
news:11******** **************@ g14g2000cwa.goo glegroups.com.. .
I don't think that could be an issue for me since this code runs fine
on a fresh Windows 2000 box that does not have Jet 3.5.1 on it, as long
as I specify the 4.0 version of the Jet OLEDB provided in the config
file for the application.


Any VB controls that support Databinding, are based on Jet 3.51... VB itself
installs the required support. Jet engines > 3.51 need to be installed. MDAC
and Jet 4 are separate downloads these days (from what I gather, poking
around the groups)

If you install VB on a fresh OS, create databases using only VB methods,
open that in Access > 97 and accept Access's desire to "upgrade" the DB, the
vb controls will no longer be able to read that database (without, if
supported, changing property settings on the controls you're using)

fwiw, I have the whole shabang installed and can pick between them.... no
problem. With ADO/DAO, you can even "mix and match" if you love punishment
<g> Just specify the library when declaring variables.

Private Sub Form_Load()
Dim oADO_RS As ADODB.Recordset
Dim oJet_RS As DAO.Recordset
End Sub


--
Ken Halter - MS-MVP-VB - http://www.vbsight.com
DLL Hell problems? Try ComGuard - http://www.vbsight.com/ComGuard.htm
Please keep all discussions in the groups..
Nov 13 '05 #8

<bj******@yahoo .com> wrote in message
news:11******** **************@ g14g2000cwa.goo glegroups.com.. .
I don't think that could be an issue for me since this code runs fine
on a fresh Windows 2000 box that does not have Jet 3.5.1 on it, as long
as I specify the 4.0 version of the Jet OLEDB provided in the config
file for the application.


You misunderstood me.
If you look carefully you will find the following dll located and registered
on your "Jet 4" Win2k machine:
<Drive:>\Progra m Files\Common Files\Microsoft Shared\Dao\Dao3 50.dll

I am not talking about the Jet Engine, drivers, providers, or the Data
Access Library you are using, merely the dependency of 'Data Bound' controls
on this DLL. Subsequently any controls you are using in your application may
have a dependency on this component as well. (Even though it may not appear
within your references.)

This may not actually be a problem in your case. I only brought it up
because it has caused problems for others in a similar situation. While
later "Jet" service packs install the dll, it doesn't always register the
dll correctly. It will take you less than a minute to locate the dll and
register it on the target machine....

[Regsvr32.exe /U
"<Drive:>\Progr am Files\Common Files\Microsoft Shared\Dao\Dao3 50.dll"
Regsvr32.exe
"<Drive:>\Progr am Files\Common Files\Microsoft Shared\Dao\Dao3 50.dll"
]

It might fix the problem.

-ralph

Nov 13 '05 #9
IIRC, SP 3 or 4 for VB6 "upgraded" VB6 to use Jet 4.0 instead of Jet 3.51.
If SP 6 is a "cumulative " SP, including all previous SPs, I would expect
that to do the upgrade, as well.

Larry Linson
Microsoft Access MVP
<bj******@yahoo .com> wrote in message
news:11******** *************@f 14g2000cwb.goog legroups.com...
All,

I was working at a client's site when I installed Visual Basic 6 on a
machine at their request. Existing applications on this machine had
specified version 4.0 of the Jet OLEDB provider in a data source string
in their config files. After installing VB 6, they stopped working,
producing the error "3220: The supplied provider is different from the
one already in use. Changing their configuration files to specify
version 3.5.1 fixes the problem.

I would prefer the machine to be at version 4.0 of Jet. Any ideas? I
have tried the following:

1. Installing the latest MDAC update.
2. Installing the latest Jet 4.0 service pack.
3. Installing service pack 6 for Visual Studio.
4. Uninstalling Visual Basic 6.0's Jet component/option.
5. Uninstalling Visual Basic 6.0 altogether.

None of these seem to have had any effect. Does anyone know how to
"re-upgrade" this machine so that the 4.0 Jet engine is available?

Thanks,

Brian

Nov 13 '05 #10

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