我的 miktex (32 位) 2.9 安装（在 Windows 7，64 位上）无法更新（GUI 和控制台）。我在 2013-07-01 首次意识到了这个问题。它似乎是由软件包引起的，miktex-arctrl-bin-2.9正如以下来自提升的 shell 的行所示。
C:\WINDOWS\system32>mpm --admin --update-db --verbose --install=miktex-arctrl-bin-2.9
downloading http://ftp.fernuni-hagen.de/ftp-dir/pub/mirrors/www.ctan.org/systems/win32/miktex/tm/packages/miktex-zzdb2-2.9.tar.lzma...
677286 bytes, 2449.67 KB/Sec
updating package definition directory ("C:\Program Files (x86)\MiKTeX 2.9\tpm\packages")...
installed 136 package definition files
visiting repository http://ftp.fernuni-hagen.de/ftp-dir/pub/mirrors/www.ctan.org/systems/win32/miktex/tm/packages/...
repository type: remote package repository
loading lightweight database...
downloading http://ftp.fernuni-hagen.de/ftp-dir/pub/mirrors/www.ctan.org/systems/win32/miktex/tm/packages/miktex-zzdb1-2.9.tar.lzma...
134749 bytes, 1356.61 KB/Sec
starting package maintenance...
installation directory: "C:\Program Files (x86)\MiKTeX 2.9"
package repository: http://ftp.fernuni-hagen.de/ftp-dir/pub/mirrors/www.ctan.org/systems/win32/miktex/tm/packages/
lightweight database digest: 348d5562d8a8cb8e92530ca19eba0eb1
going to download 21784 bytes
going to install 6 file(s) (1 package(s))
downloading http://ftp.fernuni-hagen.de/ftp-dir/pub/mirrors/www.ctan.org/systems/win32/miktex/tm/packages/miktex-arctrl-bin-2.9.tar.lzma...
21818 bytes, 213.07 KB/Sec
visiting repository http://ftp.fernuni-hagen.de/ftp-dir/pub/mirrors/www.ctan.org/systems/win32/miktex/tm/packages/...
repository type: remote package repository
loading lightweight database...
downloading http://ftp.fernuni-hagen.de/ftp-dir/pub/mirrors/www.ctan.org/systems/win32/miktex/tm/packages/miktex-zzdb1-2.9.tar.lzma...
134749 bytes, 1144.27 KB/Sec
lightweight database digest: 348d5562d8a8cb8e92530ca19eba0eb1
mpm: The operation could not be completed because the following file failed verification:
mpm:
mpm: C:\Users\EBELIN~1\AppData\Local\Temp\mikEC80.tmp
我已经尝试删除（之前存在但已过时的）软件包miktex-arctrl-bin-2.9，但更新和安装失败。清理临时存储目录并检查那里（临时）和安装文件夹中的文件权限没有帮助。
有没有无需新安装的解决方案？
将存储库更改为...uni-erlangen...没有帮助 - 它导致以下屏幕截图：
答案1
受到@UlrikeFischer 的启发，我尝试更改存储库。
通过 GUI 我没有机会 - 但是运行mpm从控制台运行五每次总是出现其他错误（例如超时和文件验证错误），最后一切正常。谢谢。