Accidentally installed with part of anti-virus still active, reinstall doesn't write any files & windows-defender crashes

[dev-rrusso]

I installed on Windows using the latest .msi, I turned off antivirus real-time protection, but some other area of protection was apparently still running and flagged dozens of files. Tried uninstalling, turning Everything off, excluding the install folder, and tried to reinstall. The installer succeeds, but no actual files are written in the destination folder.

Also I try to go into "Protection History" in Windows Defender, to see if the specific files are now being blacklisted and auto-removed.. and the Protection History window comes up for a second and shows there's a bunch of files waiting for 'action' to be taken, and then the window immediately crashes before I can take any action to 'ignore/allow' the files.

Every time I try to reinstall now the files don't show up, and every time I open the protection history screen in windows defender it crashes.

What to do?