I had not, but I just did. Similar issue. I've had no problems installing multiple prior updates. WiFi speed is 200mbps on a 1GB fiber connection. Not behind a firewall. No other internet traffic seems affected, with regular large file transfers between here and the servers I work on across the country.
Last login: Wed Jan 24 18:54:53 on console
Restored session: Sat Jan 20 15:44:43 CST 2024
~/Dropbox/NORD-Stage4/Samples
❯ softwareupdate --fetch-full-installer --full-installer-version 14.3
Scanning for 14.3 installer
Install failed with error: Installation failed
Error Domain=PKDownloadError Code=8 "(null)" UserInfo={NSUnderlyingError=0x6000015d8540 {Error Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server." UserInfo={_kCFStreamErrorDomainKey=1, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <58C826C3-DDAB-4D6B-8241-6B904DC5514E>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask <58C826C3-DDAB-4D6B-8241-6B904DC5514E>.<1>"
), NSLocalizedDescription=Could not connect to the server., NSErrorFailingURLStringKey=https://swcdn.apple.com/content/downloads/62/31/042-78233-A_YIMC5ZQM8T/yj7iay56cmvc2cux0qm55lfweb2u90euyo/InstallAssistant.pkg, NSErrorFailingURLKey=https://swcdn.apple.com/content/downloads/62/31/042-78233-A_YIMC5ZQM8T/yj7iay56cmvc2cux0qm55lfweb2u90euyo/InstallAssistant.pkg, _kCFStreamErrorCodeKey=61}}}
~/Dropbox/NORD-Stage4/Samples 24s
❯ softwareupdate --fetch-full-installer --full-installer-version 14.3
Scanning for 14.3 installer
Install failed with error: Installation failed
Error Domain=PKDownloadError Code=8 "(null)" UserInfo={NSUnderlyingError=0x600002f44930 {Error Domain=NSURLErrorDomain Code=-1004 "Could not connect to the server." UserInfo={_kCFStreamErrorDomainKey=1, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <D2FF7BE7-4DD5-4CB2-A69E-1C3DAD744BDE>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask <D2FF7BE7-4DD5-4CB2-A69E-1C3DAD744BDE>.<1>"
), NSLocalizedDescription=Could not connect to the server., NSErrorFailingURLStringKey=https://swcdn.apple.com/content/downloads/62/31/042-78233-A_YIMC5ZQM8T/yj7iay56cmvc2cux0qm55lfweb2u90euyo/InstallAssistant.pkg, NSErrorFailingURLKey=https://swcdn.apple.com/content/downloads/62/31/042-78233-A_YIMC5ZQM8T/yj7iay56cmvc2cux0qm55lfweb2u90euyo/InstallAssistant.pkg, _kCFStreamErrorCodeKey=61}}}