Title: Installation Unsuccessfully! Server requested authentication method unknow
Last modified: September 17, 2024

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# Installation Unsuccessfully! Server requested authentication method unknow

 *  Resolved [alainmelsens](https://wordpress.org/support/users/alainmelsens/)
 * (@alainmelsens)
 * [1 year, 8 months ago](https://wordpress.org/support/topic/installation-unsuccessfully-server-requested-authentication-method-unknow/)
 * Hello,
   I could take a backup of the website but placing or restoring it elsewhere
   on the same server does not work.All database details are correct but at ‘Test
   database’ I get the error message ‘Error 500…. See Console for details.’ and 
   at ‘Next’ the error message ‘Installation Unsuccessfully! – The server requested
   authentication method unknow to the client [aut_gssapi_client]’. I am working
   on Windows Server 2022 with IIS and MariaDB.I have no experience with this FastDup
   plugin yet.I don’t know what I did wrong? Taking the backup gave no errors.Can
   you guys give me hints and/or tips on how to solve these problems? See attachments
   for screen copies of the error messages:[https://prnt.sc/hRtUmlXk7r0C](https://prnt.sc/hRtUmlXk7r0C)
   [https://prnt.sc/syNMPqD03sGP](https://prnt.sc/syNMPqD03sGP)Thanks in advance.
   Best Regards.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Thread Starter [alainmelsens](https://wordpress.org/support/users/alainmelsens/)
 * (@alainmelsens)
 * [1 year, 8 months ago](https://wordpress.org/support/topic/installation-unsuccessfully-server-requested-authentication-method-unknow/#post-18019172)
 * Hello,
   I found the solution myself.The user of the new MariaDB database, needed
   to have full rights to the new MariaDB database.I got no more errors and the 
   installation of the restore worked fine without any problems and the restored
   website works as expected.Problem solved.Still, thanks for this very interesting
   migration plugin!
 *  Plugin Support [mialewp](https://wordpress.org/support/users/mialewp/)
 * (@mialewp)
 * [1 year, 8 months ago](https://wordpress.org/support/topic/installation-unsuccessfully-server-requested-authentication-method-unknow/#post-18019195)
 * Hi [@alainmelsens](https://wordpress.org/support/users/alainmelsens/),
   Greetings
   of the day.Glad to hear it works now. Please do not hesitate to contact us if
   you need any further help.Best regards,Mia

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Installation Unsuccessfully! Server requested authentication method unknow’
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 * 2 replies
 * 2 participants
 * Last reply from: [mialewp](https://wordpress.org/support/users/mialewp/)
 * Last activity: [1 year, 8 months ago](https://wordpress.org/support/topic/installation-unsuccessfully-server-requested-authentication-method-unknow/#post-18019195)
 * Status: resolved