An error occurred while updating steam
Next in the table will be the port address or range from and to to open or keep open. Last depending on your router us the protocol UDP or TCP, with some routers you have to set up a Tcp with the same port range required and duplicate it for UDP as well as an entry in port forwarding.
Other routers allow you to choose TCP/UPD, basically so you dont have to put loads of entries in port forward.
Because these are advanced troubleshooting steps, we highly recommend that you contact a local IT support specialist in your area for further assistance with these steps. Network hardware can get into slow/broken state after running for a long time.
Make sure your operating system and hardware drivers are all up to date.
For Windows: Start → search "update" → run "Check for Updates" For Mac: drivers cannot be updated separately; only the operating system can be updated.
Certain firewalls may prevent Steam from talking to its servers.
This may fix potential issues with Steam client and service files. It can be very helpful to test the issue by installing on an alternate hard drive.
Steam - Add new Library folder If the error is still occurring after following the fixes outlined above, it is possible that something outside of Steam is responsible. After doing that, steam will ask to restart and after your game will update/download!This is a common type of error that can occur any time a game is updated or installed on Steam The error results when Steam is not able to complete the installation.Restarting the computer flushes all kinds of system states and caches, while resetting other programs and releasing locks on files and other resources.
Clearing the Steam download cache will cause the Steam client to flush locally cached configuration data and acquire it from the Steam servers again.
The specific reason for the error will be shown in the parenthesis at the end of the error message.