CS0016: Could not write to output file 'c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\62d43c41\27d749ca\App_Code.7lodcznm.dll' – 'Access denied.'
Could not write to output file: 'Access is denied. ' Description After installation of CMN free busy connector when attempting to open the EWS or autodiscover website the following error is seen in the web browser: Could not write to output file 'c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\ews\08abe623\f97edc69\App_global.asax.6hb5q8sv.dll' -- 'Access is denied. Permissions to the c:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET folder and they are correct. Also, uninstalled/re-installed CMN Free Busy and .NET Frameworkand registered .NET Framework for IIS Cause Permissions issue Resolution Follow below steps: 1- Right click the %Temp% folder (mine is C:\WINDOWS\Temp) and select Sharing and Security. 2- Select the Sharing tab and Make sure that the folder is shared. 3- Select the Security tab and take a look at the list of “Group or user names:” NETWORK SERVICE should be in the list.