You may try the following suggestions one by one to check the issue.
Suggestion 1: Temporarily disable antivirus program.
Suggestion 2: Click Start, All Programs, right click Internet Explorer and click Run as administrator.
Suggestion 3: Click Start, type inetcpl.cpl into Search box and press Enter. Switch to Security tab, uncheck “Enable Protected Mode (requires restarting Internet Explorer)” and click OK.
Suggestion 4: https://www.repairtoolbox.com/projectrepair.html