@burnout426 Thank you for your quick replies. I had totally forgotten about the command line switches. Not used since Opera 15 or before. Sandbox is disabled by default on his PC. I may try Opera Developer, but I have searched for similar reports and not found another, so think it is unique to his computer. I am not sure if the Cortana issues arose with other AV programs, it was not noticed until the re-install of AVG. I will try your suggestions and those of @yanta. Again thank you for your quick replies. I think I am in for the long haul to resolve this issue.
Best posts made by p-h-f
RE: Opera 63 will not run with Anti-virus programOpera for Windows
RE: Lesenzeichenleiste erscheint unaufgefordert...Deutsch
Die Lesezeichenleiste erscheint unaufgefordert oben unter der Adresszeile, wenn ich Lesezeichen bearbeite, z.B. neue links speichere.
Da ich die Lesezeichenleiste nie sehen will, ist mir das dauernde Ausschalten von "Lesezeichenleiste anzeigen" lästig.
Wenn es hierfür wenigstens einen shortcut geben würde...
In den Einstellungen gibt es offensichtlich keine Möglichkeit, die Lesezeichenleiste auszuschalten.
Die Lesezeichenleiste kann in den Einstellungen unter Erweitert | deaktiviert werden Aussehen. Opera 63.
Opera shuts down after 30-60 seconds (resolved)Opera for Windows
After a new clean install of Windows 10 2004, Opera consistently shut down after a few seconds. I thought that this was a problem with build 2004, This was partially correct.
I found that the problem was with the graphics drivers on this computer - AMD ATI Radeon HD 6410 which was installed at the same time as Windows. The clue was in the Events viewer|Windows Log|Application which showed consistent errors with ATIeRecord with event ID of 16388. Opera failed after these events.
AMD no longer support the Radeon 6000 series chipset drivers. The cure for me was to enter c:/AMD/Radion-Software-Adrenalin~~/Bin64 and select the "AMDCleanupUtility". This removes the ATI software and drivers with exception of the Chipset drivers. It returns the PC to using the basic video driver which works correctly and Opera is stable again.
I hope this may assist others who have reported this issue, in resolving the problem. From this position it may be possible to add additional video drivers incrementally if required, while monitoring the event viewer and any potential failures.