The problem appears as shown in the following figure
Solutions
First, the anti-virus software problem
1, we find Foxmail installation directory, to see the installation directory Foxmail directory is not read-only, view the method is right click Foxmail in the pop-up menu we click "Properties" to see if it is read-only, if it is canceled read-only;
2, after the determination, try to open foxmail, if still open, can again see Foxmail folder is read-only, if it is due to anti-virus software false alarm caused by this phenomenon, this problem is usually with antivirus and security guards related to the proposal to uninstall antivirus, If not, uninstall the security defender and reboot.
Second, the Input method question
This problem may be the conflict caused by the use of Sogou input method friends will encounter this problem, the solution is to uninstall Sogou input method.