Microsoft's OneDrive cloud storage service is installed on your PC by default, and it can cause some trouble when playing PC games on multiple devices.
About ten years ago, I was using a third-party OneDrive client to sync it on an Ubuntu install. It was working brilliantly until daylight savings started our stopped, then it got confused about file times not matching so tried resyncing everything, and then saw the times still didn’t match, so made a new file for each file with an added numeric suffix, then tried doing the same for the new files, and kept going until my disk was full. That was a mess to tidy up, and once it was sorted, I had to start the sync program in GMT to stop it happening again.
About ten years ago, I was using a third-party OneDrive client to sync it on an Ubuntu install. It was working brilliantly until daylight savings started our stopped, then it got confused about file times not matching so tried resyncing everything, and then saw the times still didn’t match, so made a new file for each file with an added numeric suffix, then tried doing the same for the new files, and kept going until my disk was full. That was a mess to tidy up, and once it was sorted, I had to start the sync program in GMT to stop it happening again.