Open Settings > System > Nearby sharing on both PCs and turn it on. Use My devices only when both PCs are signed in with the same Microsoft account. For a nearby PC using a different account, select Everyone nearby while you transfer the file.
01When the other PC is missing
Section linkBring the PCs close together and check that Bluetooth is on for both. Microsoft lists Bluetooth 4.0 or newer with Low Energy support for Nearby sharing. If the option is missing, check the Bluetooth adapter in Device Manager. Under Properties > Details, Bluetooth radio supports Low Energy Central Role should be True.
02Send a small file and watch the receiving PC
Section linkSelect a small file in File Explorer, choose Share, then select the other PC. Look for the notification on the receiving PC and choose Save or Save & open. Check the folder listed under Save files I receive to in Nearby sharing settings. If the test succeeds, try the original file. Switch back from Everyone nearby after you finish if you only want your own devices to see the PC.
03If the small file works but the large file is slow
Section linkMicrosoft documents Wi-Fi transfer from an up-to-date Windows 11 PC when both PCs are on the same private Wi-Fi network. Use a trusted home or office network if available. Bluetooth transfer can be slower, so a working small-file test and a slow large file may point to the connection used for the transfer.
Sources & further reading
Put it into practice
Before you convert
A short checklist for choosing an image format and checking the result.
Download checklist (.txt)