Error 0 - Error Opening Database

AA-01019

Error 0 - Error Opening Database

If the Error 0 occurs in tandem with Error 91 or other errors, copying DAO360.DLL from the C:\Program Files (x86)\Common Files\microsoft shared\DAO folder into the C:\Windows\SysWOW64 folder and the C:\Windows\System32 folder might fix the problem. Make sure Legacy is closed when you do this and your computer will probably ask for Administrative approval, so give it.  For most users, Legacy Family Tree and Legacy FamilySearch will work at this point, so stop here. You are done.