Controlled Folder Access
Windows Defender protects against malware/ransomware by including a feature called Controlled Folder Access which can limit or prevent a program from accessing or writing to files and folders stored on the hard drive, including CoffeeCup applications, CoffeeCup application data files, and files saved by applications.
More information about the Windows Defender and Controlled Folder Access is also available here.
If access to read/write to a file or folder is blocked, CoffeeCup applications may be unable to open existing or create new data files.
There are two methods to check if Windows Defender and Controlled Folder Access is enabled:
Option 1 - Windows Search (easiest)
- Use Windows search by opening the Windows Start menu and type "Controlled", then click on the arrow next to the Controlled folder access search result: 
- Skip to step 4 below.
Option 2 - Navigate Through Windows Settings
- Open the Windows Start menu and select Settings.
- In Settings, select Update & Security then Windows Security.
- Under Windows Security select Virus & Thread Protection and Manage Settings.
- If enabled the Controlled folder access will be toggled to Yes.
- If you are having issues installing, turn this off until after the installation has finished.
- After installation, to allow a CoffeeCup Application to write to the protected folders, click Allow an app through Controlled folder access
- Next, click Add an allowed app and browse for the CoffeeCup application exe you wish to allow: (The CoffeeCup HTML Editor is shown below)