For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned these files for viruses. Microsoft used the most current virus-detection software that was available on the date that the files were posted. The files are stored on security-enhanced servers that help prevent any unauthorized changes to the files.
Install the Windows Phone SDK 8.0 as you usually would.
Known issue with this workaround
If you try to repair the Windows Phone SDK 8.0 installation, the repair is unsuccessful. To repair the installation, we recommend that you uninstall the product and then reinstall it.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.