An attempt to attach an auto-named database for file xxxx.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.

I got this error while opening a connection. So i googled for the solution and found that some changes are to be done in config file. But nothing happened after changing it as mentioned.

Then i noticed the error correctly and it was pointing correct MDF file but the path was wrong. Eventhough it was correctly mentioned in Config file.

Solution :
So i went to Properties folder -> Settings.Settings and saw that the connection string was not refreshed in it. Then i manually changed it to point to proper location of MDF file and all went right.

Thanks
Naveen Prabhu

Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.

Problem :
When we open any dot net exe we can find this error.

Solutions :

There are many possible solutions for the same error arising from different conditions. My problem was solved with the first solution, if still your problem exist check other possible conditions too.

• Right click the shortcut icon of the exe -> properties -> compatibility tab
  In compatibility mode , if the check box is on and the mode is set to any specific OS , uncheck the checkbox and click Ok
  Now check the program.

• http://www.adopenstatic.com/faq/80040e21.asp
• http://databases.aspfaq.com/database/what-is-this-multiple-step-ole-db-error.html

Thanks,
Naveen Prabhu

.Net Framework Initialization error

Problem :

When .Net exe opens the following message is thrown.
“.Net Framework Initialization error. Unable to find the version of the runtime to run this application”

Solutions:

1) Check if .Net is installed with laterst service pack available.

2) Copy the exe and the dll that are referenced in the exe, from a system in which your application is working fine, and replace in the system in which this problem is found.

3) Reinstall latest version of .net. While reInstalling turn off antivirus programs.

4) If any other version of .net is installed in the machine, remove the version and try.

for me each of these solutions worked at different places, try all.

.Net Problem in 64 Bit OS

Problem :

We may get a problem with .Net exe in 64 Bit OS, it runs properly in 32 Bit OS but will not open or throw some exception when opened in 64 bit OS.

Solution :

The target platform for the project has to be set to x86 and built.

The settings can be found at Right click on project in solution explorer -> Porperties -> build -> Platform Target -> Select x86

Build the exe and check, it would work fine.