Unable to login to webmail: Invalid request! No data was saved

Created:

2016-11-16 12:56:51 UTC

Modified:

2017-04-24 11:05:56 UTC

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Unable to login to webmail: Invalid request! No data was saved

Applicable to:

  • Plesk 12.5 for Linux

Symptoms

Unable to login to any mailbox on a server using webmail (Horde, Roundcube):

Invalid request! No data was saved

The following PHP error appears on a server:

# php -v
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/memcached.so' - /usr/lib64/php/modules/memcached.so: cannot open shared object file: No such file or directory in Unknown on line 0

Cause

memcached.so that is defined in memcached configuration at /etc/php.d/memcached.ini does not exist.

Workaround

Move /etc/php.d/memcached.ini file:

# mv /etc/php.d/memcached.ini /etc/php.d/memcached.ini_backup

Resolution

Install module correctly according to:

https://devblog.plesk.com/2015/08/adding-custom-php-modules-in-plesk/

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