Battlefield 3 Origin Install issues - error 262145:5

I do believe I've found a slight fix for part of this. If you have only installed some of BF3 via disc, then you can allow the download to carry on from where it stopped by:

1. Making sure that the download folder XX:programfiles(x86)/origingames is the same spot where you first installed half of BF3. For example, if you installed half of it on the D drive but it was originally was on the C drive, Origin would automatically think that all DOWNLOADED (not installed via disc) games should go to the C drive. Therefore, you would want to change this to the D drive instead. You can do this by going to the top left 'Origin' tab - Application Settings - Downloaded Games, and then just change the folder.
2. If you are successful, when you click download, it should just carry on from where it stopped!

Note: If you had stopped the installation midway, it might cause a file to be corrupted. You can fix this by right clicking on the game and choosing 'repair install'

The other answers should fix the problem, but you will lose all the progress you had once.

This problem is caused when your client (Origin Downloader) downloads some corrupted files. Everytime you restart a download, Origin try to open ALL the files to get their CRC's, but these corrupted files has wrong CRC's. So you must delete all these corrupted files that are listed in a LOG file.

Do this:

1. Go to C:ProgramDataOriginLogs and open Client_Log.html

2. Open it in your browser

3. Sroll next to the end of the file, and look for some red phrases saying something like

   Error opening file "C:Program Files (x86)Origin GamesBattlefield 3CoreEACore.dll". (5)

So I had to delete the EACore.dll, and other files listed together.

If there is more files listed, delete them all and repeat the process until Origin can start downloading fine. That would be sad if some very large files were corrupted, but I had luck.

Delete everything in the battlefield directory except the DATA directory (which contains all the large files). Then in the Origin program in main menu click Origin -> Reload my games. Your download will continue at 61%.

For me works this: delete all files in main game folder, and Core directory. Then rest of the download process will take another few minutes.

i found the solution , look : cut your battlefield folder from origin's games folder , and put somewhere, and then start downloading, and after downloading about 20 Mo stop it and go into your battlefeild's folder and cut : core+data+update and put it into origin's games again , and start downloading again , and have fun ^_^

i had BAttle Field 3 Prompting to Download Issue, I found this Article Useful to Fix it Out... Here is the Link

http://www.ign.com/blogs/christina.john/2013/08/29/fix-battlefield-3-prompting-to-download/

I just thought I would throw in an alternative answer. I just updated Origin to the latest version, having run it for the first time since I upgraded to Windows 8.1. I was encountering Error 262145:5 on all my downloads (initial downloads, so I had no existing folders on my hard drives to delete, indicating that the other answers to this question did not apply). When I exited, Windows popped up that familiar "Did this program run correctly?" dialog, and I ran through it.

After a couple test runs, Windows determined that the application needed to be run as Administrator, using the Windows Vista (SP2) compatibility mode. Once I reached that config, downloading worked. I've been able to download and install all of my games now that the Windows compatibility settings are set correctly.

I found that if you log into Origin on their website, find BF3 on the online store, then click "Play on Origin", it will prompt you to open with the application. There you can choose Origin, and the download will work.