Hello.
After i install Avast Antivirus Free 10.3.2225, my Office 365 Home & Business programs can started only every third times.
Error code what i get is: 0xc0000005
While Avast use of shelters is stopped permanently, the same problem exists.
Reinstalling Microsoft Office does not help or change the situation.
BUT, if i uninstall Avast Antivirus Free 10.3.2225, problem solved.
I clean registry and install it back and BOOM, problem come back.
Solution 1: Change your antivirus software to something else or
Solution 2: Install an older version of Avast Antivirus and wait for the developers of solutions.
Problem tested and solved with 2 x Fujitsu Siemens desktop with Windows 7 Home Premium 64-bit Sp1 operating system ( clean install ).
Office is Microsoft Office 365 Small Business Premium latest version 15.0.4745.1002.
Avast, Operating system and Office is up to date.
Is anyone better solution?