Applicable to:
- Plesk for Windows
Symptoms
-
On a Plesk for Windows server, MailEnable WebMail, myLittleAdmin and/or default website stops working:
CONFIG_TEXT: Error 503: Service Unavailable
-
The corresponding application pool (
MailEnableAppPool
,sqladmin(default)
orDefaultAppPool
) is stopped in Server Manager > Tools > Internet Information Services (IIS) Manager > server_hostname > Application Pools. -
After starting the application pool and accessing a website in the browser, one of the following error messages is found in Event Viewer > Windows Logs > Application:
CONFIG_TEXT: The Module DLL C:\Windows\System32\inetsrv\pleskurlprotection.dll failed to load. The data is the error.
CONFIG_TEXT:The Module DLL C:\Windows\System32\inetsrv\pleskrepairmodule.dll failed to load. The data is the error.
-
The parameter Enable 32-Bit Applications is set to True in Internet Information Services (IIS) Manager > server_hostname > Application Pools > pool_name > Advanced Settings...:
Cause
Enabled parameter Enable 32-Bit Applications causes incompatibility.
Resolution
-
Connect to the server using RDP.
-
Open Internet Information Services (IIS) Manager:
- in Windows Server 2008 and 2008 R2: go to Start > Administrative Tools > Internet Information Service (IIS) Manager.
- in Windows Server 2012 and newer: go to Start > Server Manager > Tools > Internet Information Service (IIS) Manager.
-
Go to server_hostname > Application Pools, select MailEnableAppPool and click Advanced Settings... in the right pane.
-
Switch the parameter Enable 32-Bit Applications to False and click OK to save the changes.
-
Repeat the steps 3-4 for myLittleAdmin (pool name is
sqladmin(default)
) and/or default website (pool name isDefaultAppPool
) if necessary.
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