Today I wanted to install some new packages in the Package Manager. I got an error message saying:
"MiKTeX Problem Report
Message: HTTP Error
Data: HTTP/1.1 301 Moved Permanently"
I checked and found out, that the repository I used is indeed unavailable at the given adress. I then tried to change the repository. After selecting "Packages shall be installed from the Internet" and clicking "next", the same error message appears and the list of available repositories is not loaded. So basically, I cannot change the repository because the repository I used is not online, which is actually the most important reason for changing the repository.
Does anybody know a solution for this? I guess a workaround would be to change the adress of the repository manually, but for this, one would need to know where it is stored. I've added a screenshot-mashup to show the problem.

HKEY_LOCAL_MACHINE/SOFTWARE/MiKTeX.org/MiKTex/2.9/MPM/RemoteRepositorythat stores the address of the remote repository. With the usual caveats about being careful editing the registry you could either delete that key or change it to an accessible repository (the actual repository doesn't matter, since as long as it is accessible you can always change it through the GUI). Hope it helps! – darthbith Apr 15 '14 at 12:11ftp://mirrors.rit.edu/CTAN/systems/win32/miktex/tm/packages/– darthbith Apr 15 '14 at 12:55ipconfig /flush) and try again … Look on MiKTeX Package Repositories, whether the selected repositories are available and up to date … Perhaps just MiKTeX.org itself was unreachable, cf. my answer MiKTeX: connect failed in tcp_connect. – Speravir Apr 15 '14 at 22:15