my update server was configured to "ir.archive.ubuntu.com" and I downloaded ubuntu updates from it. now that server has been deleted from my update servers list! I don't know how. Is it possible to add this server again to my update server list?

English is not my native language; please excuse typing errors.


you can update the sources.list file with the URL of your update sever as below

Open Terminal

sudo nano /etc/apt/sources.list

Hash all lines and then input the update sever URL as below

dep http://www.ir.archive.ubuntu.com

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