[Solution] WordPress management screen is not displayed "Page not found" ... Improved by canceling Cloudfrare service

It was sudden one day. The situation that the WordPress management screen dashboard is not displayed.The site is displayed, but it is displayed as content and stops at the "Page not found" page.

The cause is the Cloudfrare service

The cause is [Cloudfrare free service】WhenCloudfrare pluginIt was an application of.This can be restored by deleting the registration.There may have been a problem with the service settings, but it became stable with this service deletion.

We tried to speed up the site and added a recommended cache plugin, but in the end, by using the Cloudfrare service, the display speed was improved considerably (70%).I was relieved at this point, but after about 10 days, the management screen did not appear.The login screen does not appear either.

The URL of the browser that seems to be redirected also remains stopped as shown below

https://kagiya-moriokaben.jp/wp-login.php? redirect_to= https% 3A% 2F% 2Fkagiya-moriokaben.jp% 2Fwp-admin% 2F & reauth = 1

I searched on the web and tried various blogging methods.However, we do not directly operate the database.

• Clear browser cache
• Stop or delete cache plugins
• Cloudfrare service cache purge
• Add definition to .htaccess (management screen site URL and site URL)

However, there is no improvement.In the end, I made a mistake. I applied the contents of the .htaccess change blog, and the site completely collapsed. (Be careful about the information that falls when you can't do anything)

Attempt to recover from backup data

I tried both the backup data at the time of BackWPup and the backup data of UpdraftPlus, but the backup data of BackWPup is overwritten by FTP, and it is not improved by uploading. (FTP upload takes too long)

UpdraftPlus Backup Data Recovery Decision

• Delete the MySQL database and WP from the provider dedicated server control screen (this is necessary because it will be straight)
• Build a new WP and MySQL database
• Changed the name server DNS from Cloudfrare designated DNS to provider-only.(I didn't do this at the time of the first recovery. Therefore, the same trouble will occur about 10 days later)
• At this point, you can log in to the WP management screen dashboard (relief)
• Check site SSL settings (provider free or SSL plug-in)
• Only upgrade WP version
• New installation of UpdraftPlus plugin
• Recover from full backup data in Dropbox
• Finally a complete revival here
• Rebuild site SSL and finish

Completely faster ... Decided to move to RS server

Name.com I used to use the rental server SD-11, but there is still a problem with the display speed.I know that the plug-ins can't be helped by the work so far.

Is it the timing to move the server, or is there a cost increase?What are the details of the migration method?

If it costs money, there seems to be a proxy service, so I looked it up. I know how to fully recover from UpdraftPlus, so it's cost and detail.

There was a part that did not follow the site moving procedure that was on Name.com, but I was able to start operation with the new server RS ​​model, and the display speed is also quite good.