In April Microsoft released a new 64-bit Preview version of the OneDrive client for Windows 10 Insiders.
Now it appears the updated client is now generally available and rolling out to regular users.
#OneDrive ?? in 64-bits… now rolling out.
Get it hot and fresh wherever you sync your files. ?
— Jason Moore (@jasmo) August 27, 2021
The 64bit client is identical to the 32bit one, but is expected to offer better performance for larger file sizes, if you have a lot of files, and if you have a computer that’s running a 64-bit version of Windows.
The 64bit OneDrive client is only for users using 64bit x86 Windows, with an ARM64 bit version not available yet.
The 64-bit version of the app is build 21.165.0815.0001. To see if you have it open the Settings of the sync client.