Transfer stuck, slow or not connecting? How to fix it

Some networks block direct connections between devices: strict corporate networks, some public hotspots, some mobile carriers. Switch one of the two devices to another network, for example from office Wi-Fi to a phone's hotspot, or from mobile data to home Wi-Fi, and try again.

A VPN or a strict firewall can also block the connection. Pausing it for the transfer often helps.

• The speed is the slower of the two connections. Upload speeds are often much lower than download speeds.
• The free plan is capped at 2 MB/s and each transfer starts after a short wait: usually 30 seconds to a minute, longer for very large files or at busy times. Basic goes up to 20 MB/s, Pro up to 60 MB/s and Max has no cap.
• Sending to several people at once shares your upload bandwidth between them.
• Wi-Fi far from the router is slow. A cable or a spot closer to the router helps.

• The sender closed the tab, or the device went to sleep: keep it plugged in, awake, with ShareUrFiles open.
• On a phone, switching apps or locking the screen pauses the page. Stay on ShareUrFiles until the end.
• “Code not found”: check the digits. The transfer may have expired or been stopped.
• “Transfer full”: the link has reached its maximum number of recipients. Ask the sender for a new one.

Check the free space on the receiving device. For files of tens of gigabytes, use Chrome, Edge or Firefox on a computer, which can write huge files straight to disk. If a file's fingerprint doesn't match, it is discarded for safety: simply start the download again.