Blank Page while login to Horde

Introduction

In some cases, users may encounter a blank page when attempting to log in to Horde Webmail. This issue is often caused by corrupted or stale session files stored by Horde.

Removing the existing Horde session files forces the application to create fresh sessions, which usually resolves the problem.

Procedure

Step 1: Log in to the Server

Access your server via SSH as the root user.

ssh root@your-server-ip

Step 2: Navigate to the Horde Session Directory

Change to the directory where Horde stores its session files:

cd /var/cpanel/userhomes/cpanelhorde/sessions

Step 3: Verify the Existing Session Files

You can list the contents of the directory to confirm the presence of session files:

ls -lah

You should see files similar to:

sess_32f9cc5af1760ba633c1a669fbd2cb2a
sess_cac2dfc2fa606ec50896ee5d8401f2e9
sess_7dda6051bb705f6099e37d64a088dbb4
...

Step 4: Remove the Horde Session Files

Delete all existing Horde session files:

rm -f sess_*

Step 5: Test Horde Login

After clearing the session files, try logging in to Horde Webmail again. Horde will automatically generate new session files, and the blank page issue should be resolved.

Conclusion

If Horde displays a blank page during login, clearing the Horde session files is a quick and effective troubleshooting step. Simply remove the existing session files from the Horde sessions directory and retry the login. In most cases, this resolves the issue immediately.