OP: error 64C Microsoft Silverlight won’t install through Windows Update….
I have tried several times to install the update in the title, but get the above error message each time. I have tried from user and admin accounts with the same outcome….
Jan 19, 2010 · Update for Microsoft Silverlight (KB979202) fails with error code 643; multiple update tries….
Apr 25, 2011 · this error comes up when trying to install windows updates….
Oct 21, 2011 · Hi, You may try the following methods and check the status of the issue. Method 1: Run the windows update troubleshooter. http://windows.microsoft.com/en ……