Random 404 errors in Dashboard

  • This has been going on for a while, but I was up to my ears in grad school and didn’t have time to search the forums, so I’ve just been living with it. Tonight I’ve been trying to find the cause, and haven’t been able to find anything in the forums that seems to match my problem.

    I get random 404 errors when working on site admin functions in Dashboard; mostly, but not always, when upgrading themes and plugins. If I back up and try again, it will finally work on the 2nd or 3rd try.

    Another issue which I suspect is related is that when I try to automatically upgrade to a new WP version, the site will more often than not get “stuck” in maintenance mode, and then I have to FTP in, delete the .maintenance file, and re-try the upgrade.

    This is happening on multiple sites, in multiple browsers (Firefox and Chrome) and has been going on through the past several WP versions, so I think the problem has to be at the server end of things. (My sites are hosted on Dreamhost, FWIW.)

    Any idea what is causing these issues?

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  • Have you tried:

    – deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).

    – switching to the Twenty Ten theme to rule out any theme-specific problems.

    – resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.

    Thread Starter Geek2Nurse

    (@geek2nurse)

    Last night I encountered both of these problems in a brand new out-of-the-box WP installation (via Dreamhost one-click install) that I was setting up for a friend. I hadn’t even had time to change anything yet; logged in as admin for the first time and got the 404 error, tried again, got in, clicked the link to upgrade to the latest version, and got the “stuck in maintenance mode” problem.

    Given that, I’ve pretty much ruled out plugins, themes, etc. as the cause. I already suspected that was the case, since it happens on all of the multiple different WP installations (around 26 of them at last count) that I manage, all with different combinations of themes / plugins / etc.

    It has to be a server-side issue. I’m just not tech-savvy enough any more to know how to troubleshoot it or what to look for (I think all my geek memory spaces were overwritten during nursing school and grad school). ??

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