The first thing that the technician should ensure to correct the database synchronization errors is that NTP is running on the database system. NTP (Network Time Protocol) is a protocol that synchronizes the clocks of network devices with a reference time source, such as an atomic clock or a GPS receiver. NTP ensures that all devices on a network have accurate and consistent time settings, which can affect various functions and applications. Database synchronization is a process of maintaining data consistency and integrity across multiple database servers or instances. Database synchronization can depend on accurate time settings, as time stamps are often used to determine which data is newer or older, and which data should be updated or overwritten. If NTP is not running on the database system, it may cause time drift or discrepancy between different database servers or instances, which can result in synchronization errors or data conflicts.

Explanation
The user has likely fallen victim to a phishing scam, which is a fraudulent attempt to obtain sensitive information, such as passwords, by disguising as a legitimate entity. The link in the email that required the user to change the account password was probably a fake website that mimicked the company's external database, and captured the user's credentials when they entered them. This could compromise the security and integrity of the company's data, as well as the user's identity and privacy12.
The company should take immediate action to prevent further damage and investigate the incident. The first step is to disable the user's account and inform the security team. Disabling the user's account can prevent unauthorized access to the external database by the attackers, who may use the stolen credentials to log in and manipulate or steal data. Informing the security team can alert them of the breach and allow them to take appropriate measures, such as scanning for malware, changing passwords, notifying other users, and reporting the incident34.

Comprehensive Detailed Explanation with all CompTIA Server+ SK0-005 Study Guide References:An Open file backup solution allows files that are in use by other processes to be backed up without stopping those processes. This is especially important in environments where critical applications and services must remain operational while backup operations occur. Technologies like VSS (Volume Shadow Copy Service) in Windows provide this functionality, enabling the backup of open files such as databases or system files without disrupting the processes.
* Differential and Archive backups are types of backup strategies but do not specifically address backing up open or in-use files.
* Synthetic full backups refer to a method of creating a full backup by combining incremental backups and a full backup, but it does not specifically address open files.

Explanation
The best way to meet this requirement is to create a PowerShell script to disable the RDP service on all Windows-based servers within a data center. PowerShell is a scripting language and command-line tool that can be used to automate tasks and manage Windows systems remotely. A PowerShell script can use cmdlets (commands) and parameters to perform actions on multiple servers at once, such as disabling a service or changing a configuration setting. RDP (Remote Desktop Protocol) is a service that allows remote access and control of a Windows system through a graphical user interface. Disabling RDP can improve security by preventing unauthorized or malicious access to the servers.
References: CompTIA Server+ SK0-005 Certification Study Guide, Chapter 4, Lesson 4.3, Objective 4.3; Chapter 7, Lesson 7.1, Objective 7.1