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When you try to back up data by using Microsoft Azure Online Backup, the backup process is unsuccessful.


This problem occurs if the Microsoft Azure Online Backup Agent cannot communicate with the Microsoft Azure Access Control Service (ACS). This communication does not occur because the backup agent cannot verify the server certificate that is presented by the Azure ACS service.

Note The ACS server certificate uses a new certification authority (CA) chain.


To resolve this problem, download and install the Upgrade.exe file.

The following file is available for download from the Microsoft Download Center:

DownloadDownload the Upgrade.exe package now.

For more information about how to download Microsoft support files, click the following article number to go to the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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