WordPress backend stopped working

Time to go thru a standard debug.
– 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 default 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.

If that does not help ask for support at
https://www.ads-software.com/support/theme/suffusion

as I said I have NO access to the backend so I cannot deactivate themes or plugins… should I just rename the plugin folder via FTP? would that do it?

Ok was able to fix it and wanted to report back in case other users face the same issue.

First I tried renaming the plugins folder to something else via FPT and I still saw no backend. So I assumed it was not a plugins issue.

The error_log in the wp-admin folder had a bunch of these:

[25-Jan-2014 18:36:58 UTC] PHP Parse error: syntax error, unexpected $end in /home/chaindlk/public_html/wp/wp-admin/includes/misc.php on line 589

So I assumed that the misc.php file was incomplete (and it indeed when I opened it via FTP inspect it is cut off abruptly in the middle of a function – newby readers, if you don’t see a “?>” at the end of the file it is not a complete PHP file)

So I downloaded the latest wordpress and got the misc.php out of there and uploaded it and now I see the backend.
I also see an error which says:

“An automated WordPress update has failed to complete – please attempt the update again now.”

So I figured that 3 weeks ago when I tried to do the update to the latest it didn’t work but I never noticed, somehow…

Now I re-updated and all is good.
Thanks all.

marking as resolved