我TL2018在 Windows 10 上。当尝试用 更新软件包时tlmgr，它说tlmgr本身需要更新。
但是，该命令tlmgr update --self失败，并显示以下错误消息
λ tlmgr update --all --self
tlmgr.pl: package repository http://anorien.csc.warwick.ac.uk/mirrors/CTAN/systems/texlive/tlnet (not verified: gpg unavailable)
tlmgr.pl: Preparing TeX Live infrastructure update...
DO NOT CLOSE THIS WINDOW!
TeX Live infrastructure update in progress ...
Detailed command logging to "\\icnas1.cc.ic.ac.uk\kg314\texlive\2018\temp\update-self.log"
Could not change working directory to "\\icnas1.cc.ic.ac.uk\kg314\texlive\2018\temp\.."
Aborting infrastructure update, no changes have been made.
如何修复此问题？在当前状态下，我无法安装任何软件包。
更新
texlive我尝试在机器上进行全新安装。但是，在到达tar软件包后，安装突然崩溃，日志中最后出现以下条目。
TLUtils::untar: H:\install-tl-20190207\tlpkg\installer\tar.exe xmf C:\Users\kg314\AppData\Local\Temp\goATAeqfOX\xskZVdlZXH/kpathsea.win32.tar failed (in H:/texlive/2018)
TLPDB::_install_package: untar failed
Installation failed.
Rerunning the installer will try to restart the installation.
Or you can restart by running the installer with:
install-tl-windows.bat --profile installation.profile [EXTRA-ARGS]
or
install-tl-advanced.bat --profile installation.profile [EXTRA-ARGS]
现在，我处于不一致的状态。任何进一步的行动tlmgr update --all都只会导致错误
tlmgr.pl: Fundamental package texlive.infra not present, uh oh, goodbyeShould not happen, texlive.infra not found at \\icnas1.cc.ic.ac.uk\kg314\texlive\2018\texmf-dist\scripts\texlive\tlmgr.pl line 7344