access mdb - Microsoft JET Database Engine error '80004005'

From time to time (after a windows update) my MDB files no longer open via IIS - ASP) with the message:

  Microsoft JET Database Engine error '80004005' - Non-specific error.

     

The connection has stopped working for any MDB file.

     

Set oConn = Server.CreateObject ("ADODB.Connection") 'oconn.open   "Provider = Microsoft.Jet.OLEDB.4.0;" & "Data Source=" &   Server.Mappath ("/ prgrm / seguros.mdb") & ";"

I reinstalled the engine. I reconfigure IIS to run 32-bit applications. I have checked folder and MDB file permissions.