Returning player Error code weasel

So my mate has started playing destiny again and installed last week but every time he selects a character and loads into orbit after around 20-30secs he gets booted with the weasel error code or if he loads into the tower same thing happens

He stopped playing before load outs were a thing

We have done things from reg edits, flushing dns, setting a custom dns verifying steam files CMD corruption scans etc nothing has helped and restarting router etc

Just wondering if anyone knows a fix bungie help hasn’t really said anything that’s going to help the issue at hand