<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On May 14, 2021, at 18:56 , Wei Zhang <<a href="mailto:weizhang288@gmail.com" class="">weizhang288@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Hi, </div><div class=""><br class=""></div><div style="orphans: 2; widows: 2;" class="">Each time I open my computer, the following message appears: Unable to find a valid update server. Can you help me solve this issue? I can’t find any solution online. Thank you. </div></div></div></blockquote><br class=""></div><div>What is your default repository? Try setting it to <a href="https://mirror.ctan.org/systems/texlive/tlnet" class="">https://mirror.ctan.org/systems/texlive/tlnet</a>. If it's already set to that, open the Log from the Window menu, select-all, copy and send me the output.</div><div><br class=""></div><div>thanks,</div><div>Adam</div><div><br class=""></div></body></html>