"Cannot sign in to Lync" error message when you sign in to a Lync 2010 client by using the Lync Online service

Update package information

Microsoft Download Center

The following files are available for download from the Microsoft Download Center:


Download the Lync.msp x86 package now.

Download the Lync.msp X64 package now.

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 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.

Prerequisites

There are no prerequisites for installing this update package.

Restart requirement

You have to restart the computer if certain dependencies in Lync 2010 are still running when the update is applied. For example, if you have Microsoft Office Outlook or Lync 2010 running when the update is applied, you have to restart the computer.

Registry information

You do not have to make any changes in the registry to apply this update.

File information

This update may not contain all the files that you must have to fully update a product to the latest build. This update contains only the files that you must have to correct the issues that are listed in this article.

After the update is installed, the global version of this update has the file attributes, or a later version of the file attributes, that are listed in the following table:

For Lync 2010 x86-edtion:

For Lync 2010 x64-edition: