If you are using anti-virus software, set up an exclusion or an exception within your anti-virus software for the following folders:
You should also set up an exclusion or an exception for the following programs, all located in C:\WINACS:
Sometimes anti-virus software incorrectly flags a trusted file as a harmful file. Since this may occur with these files and folders, setting up an exclusion or an exception prevents your anti-virus software from taking action against them.
In addition to setting up exclusions within your anti-virus software, you also need to set permissions for certain folders.