If you have noticed that your windows server has a lot of files in the folder ProgramDataMicrosoftWindowsWERReportQueue you can delete them to free up space on your drive.
It is recommended using “Disk Cleanup” to free up the space.
To disable the files from accumulating you can turn Windows Error Reporting off.
On a Windows 2008R2 server open “Server Manager”
Open “Resources and Support”
Click “Configure Windows Error Reporting”
In the “Windows Error Reporting Configuration” box
Select “I don’t want to participate, and don’t ask me again”
See the steps from Microsoft below
http://technet.microsoft.com/en-us/library/cc754364.aspx#BKMK_enableWER_RMT