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Database Schema Update Failed after an upgrade to version 23.261.x

Original Question or Issue:

Why am I getting a "Database Schema Update Failed" after upgrading FileCloud Server to the latest version? Server is running in Ubuntu 22.04

Environment:

  • Product - FileCloud Server
  • Version - 23.261.x
  • Platform - Windows, Linux

Steps to Reproduce:

NA

Error or Log Message:

The System Check shows the error below.

Server logs repeatedly show the error lines below

2026-04-02 0:00:01.904764 ERROR: [92821][17750556016385] Failed to migrate Feature Compatibility Version update to 7.0 {"exception":"[object] (MongoDB\\Driver\\Exception\\CommandException(code: 40415): BSON field 'setFeatureCompatibilityVersion.confirm' is an unknown field. at /var/www/html/thirdparty/vendor/mongodb/mongodb/src/Operation/DatabaseCommand.php:83)
Line    18: 2026-04-02 0:00:01.905346 ERROR: [92821][17750556016385] Update Database Error. Exception Message: MongoDB\Driver\Exception\CommandException: BSON field 'setFeatureCompatibilityVersion.confirm' is an unknown field. in /var/www/html/thirdparty/vendor/mongodb/mongodb/src/Operation/DatabaseCommand.php:83
Line    40: 2026-04-02 0:00:01.905451 ERROR: [92821][17750556016385] ERROR: Failed to Update DB to latest schema version via CRON []

Defect or Enhancement Number:

 

Cause:

  • This could happen if MongoDB did not update successfully, or the correct scripts to upgrade the FileCloud Server in a Linux environment were not used.

Resolution or Workaround:

The steps below is specific to FileCloud Server hosted in Ubuntu.

  • Make sure to secure a backup of your DB or your entire system in case of the event that we need to rollback.

  • Plan your downtime so no user and productivity is affected.

  • Through the command line, build the repo using the commands below:

apt clean cache

curl -sL https://repo.filecloudlabs.com/static/fcp/apache_check | sudo bash -

curl -fsSL https://pgp.mongodb.com/server-7.0.asc |

sudo gpg -o /usr/share/keyrings/mongodb-server-7.0.gpg --dearmor

echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-7.0.gpg ] https://repo.mongodb.org/apt/ubuntu jammy/mongodb-org/7.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-7.0.list

rm -rf /etc/apt/sources.list.d/mongodb-org-6.0.list

apt update -y

apt install -y mongodb-org=7.0.30 mongodb-org-database=7.0.30 mongodb-org-server=7.0.30 mongodb-org-mongos=7.0.30 mongodb-org-tools=7.0.30 --allow-downgrades
apt-mark hold mongodb-org mongodb-org-database mongodb-org-server mongodb-org-mongos mongodb-org-tools

  • Once completed, run mongosh

  • Check the FCV version db.adminCommand({getParameter: 1, featureCompatibilityVersion: 1}), if this still shows 6.0, you may set the FCV using the command db.adminCommand({ setFeatureCompatibilityVersion: "7.0" }).

Notes: