Hi, i have upgrade to 5.5 and when is start upgrading i see this message:
Upgrading is lock and access to forum is impossible… 
Help me please !!!!
Thank’s Stef
This is nearly always caused by either a javascript conflict but – more commonly – because another process is hijacking the AJAX call. Some login authentication plugins can do this – for example – because they monitor the ajax requests to the server and then hook extra code in. This means that the response we get back from the server is not what is expected and it terminates.
So – if you have performed successful SP upgrades before then you need to work out what had changed to your website. Any new plugins introduced – for example.
Alternatively if you know of any plugin you have installed that might be sending out extra data with ajax requests then deactivate it while you perform the upgrade.
The other possible way is to (1) Try it with the WP default theme and if still no joy (2) deactivate other WP plugins one at a time until it goes through. At least that way we will know where the issue stems from. Actually – if you place your site in Maintenance Mode it really doesn’t usually take very long to do this.
I started by saying ‘nearly always’. I would say probably 95% of the time it is one of the above.
I can also deactivate all plugin for try but before of upgrading simplepress it was all perfect and i don’t install none plugin extra…
This thing’s is very worrying if when there is a new version i risk total locking the forum…
I had to disable all plugins, upgrade simple press and then re-enable all plugins. It seems to work … Next upgrade I hope this does not happen …
Thank’s
Stef
If you had to remove them all and were doing as recommended which is trying the upgrade between each one – then it must have been the last one you deactivated that is causing the conflict. So what was it?
Is too much longer deactive one at time… I had deactive all plugin… Activate simple press and upgrading… after i have active all plugin… and now is normal… Probably there is in upgrading process somethings that creates the problem… Sorry but I do not have much time to try to disable a plugin at a time… so luckily it worked…
Shame. It would have been useful for you to know which one was causing the problem.