Hi I just installed windows 7 ultimate and tried to install Windows media player and received follwing error. Is there any knows/comman fix for this? Thanks Manish Installer encountered an error: 0x8007000d The data is invalid

I thought its worth mentioning that I did not download the installation file initially. I used a file that I had from my previous installation on some other machine. But Microsoft also has this "Validation" process in between. So the initial installation did not go through that process. The second time, I downloaded the installation file from web and it did go through validation but now it is giving the error mentioned above. So I am just think that I need to clean up all the components from my 1st installation. Any help will be much appreciated. Thanks

I think it may have something to do with the update being signed, and it now being used on a different computer. Navigate to: C:\Users\YourUserName\AppData\Roaming\Microsoft\Crypto\RSA And if you're feeling really crazy, delete the information inside.

RSA folder is also present at C:\ProgramData\Microsoft\Crypto\RSA What is this info all about? What happens if we delete that? Is there any other method to solve the above problem? Thanks

From what I read, "The MachineKeys folder stores certificate pair keys for both the computer and users. Both Certificate services and Internet Explorer use this folder. The default permissions on the folder may be misleading when you attempt to determine the minimum permissions that are necessary for proper installation and the accessing of certificates." I think deleting them would be OK if you're not using BitLocker. Just back them first.

Thanks for your inputs. I checked the dates on my other machine. The date when I had installed Media player and the creation dates of all the files in that folder do not match. Do you think I should still try that option? Thanks

Hi, How did you install Windows Media Player? This should be already in Windows 7. Try emptying the %TEMP% folder and see if it works. Regards, Sabrina This posting is provided "AS IS" with no warranties or guarantees, and confers no rights. |Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.