Change display message for users when trying to access a resource that is in maintenance mode.

Instructions

For On-Prem deployments, we can modify this message by making changes in below locations on StoreFront servers-

Navigate to the below files and take a backup of all 4 files listed below.

Open your favorite text editor in administrator mode (run as admin).

In each file below, find "currently unavailable due to planned maintenance" and replace it with any custom message of your choice. You can chose to modify message for apps and/or desktops.

1) C:\inetpub\wwwroot\Citrix\LDAPWeb\scripts
Default.htm.script.min

2) C:\inetpub\wwwroot\Citrix\LDAPWeb\scripts\en (Select local language for this)
ctxs.wrstrings
3) C:\inetpub\wwwroot\Citrix\LDAPWeb\receiver\js
ctxs.core.min_E75EE2C7C0435FF3
4) C:\inetpub\wwwroot\Citrix\LDAPWeb\receiver\js\localization\en (Select local language for this)
ctxs.strings_AB32B9C07549A7BC

After modifying the above files, copy these files to all StoreFront servers manually. Propagation doesn't always work.
After this, reset IIS and clear cache from browser.

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