I have recently started having issues when trying to flash a new Image onto my SD cards. From WinDiskImager I get lock error 5, Etcher gets stuck on starting. It doesn't matter what SD card (even brand new ones), what Image or what flash tool I use, it wont start the flashing Process. Using a different system (that I don't have access to anywhere near as often so it isn't really viable as I flash new cards fairly often) it works on the same cards with the same image without any issue. I have been searching for a solution for a while now but have so far drawn a blank.
Any Ideas what could be causing this?
I am using Windows 10 - 1903, though the issue started before I updated.