connection errors

Tech Optimizer
July 28, 2026
Malware can threaten Linux systems, which are often mistakenly believed to be immune to viruses. It can be introduced through email attachments, infected files, or compromised plugins, especially when Linux servers interact with Windows clients or handle internet uploads. ClamAV is an open-source antivirus engine maintained by Cisco Talos, designed for scanning mail traffic and file uploads. As of mid-2026, the stable release is ClamAV 1.5.x, with version 1.5.2 being the latest patch. To deploy ClamAV, users need root or sudo access on a compatible Linux machine, at least 2 vCPUs and 2GB of RAM, 5GB of free disk space, and outbound HTTPS access to ClamAV’s signature mirrors. The installation process involves several steps, including configuring freshclam for automatic updates, validating detection with the EICAR test file, and setting up cron jobs for regular scans. ClamAV can also be integrated with mail servers and a SIEM for enhanced security. Common pitfalls in deployment include skipping the initial freshclam run and using clamscan instead of clamdscan for repeated scans. ClamAV is free for commercial use and can also scan Windows systems, although it does not replace comprehensive endpoint protection solutions.
Winsage
March 5, 2026
A critical bug in Windows 11 builds 24H2 and 25H2 is causing users with Ethernet connections to lose internet access after installing updates KB5066835 and KB5065789. Users have reported issues on Microsoft’s Q&A forums, and rolling back the operating system is recommended. Possible fixes include performing a full network reset, flushing DNS and resetting TCP/IP via Command Prompt, editing the registry, and using hardware bypass solutions like USB-to-Ethernet or USB-to-WiFi adapters.
Tech Optimizer
January 26, 2026
AlloyDB for PostgreSQL is a fully managed database service designed for enterprise workloads, combining PostgreSQL's strengths with Google Cloud technology for enhanced performance, scalability, and availability. A new feature, managed connection pooling, addresses the challenges of inefficient database connection management, which can lead to performance degradation, resource exhaustion, and reliability issues. Managed connection pooling maintains a cache of active database connections, allowing applications to reuse connections instead of creating new ones for each request, thus reducing latency and resource consumption. This feature is tightly integrated into AlloyDB, simplifying operations and optimizing performance and security. It offers two configurable pooling modes: transaction mode, which maximizes reuse for short transactions, and session mode, which maintains a connection for the entire session. Enabling managed connection pooling can increase transactions per minute by up to five times, support over three times more concurrent connections, decrease connection latency, and improve reliability during traffic spikes. UKG, a provider of HR solutions, has adopted this feature to enhance the performance and scalability of their applications. To enable managed connection pooling, users can activate it in the Google Cloud console and connect applications using standard PostgreSQL drivers to the designated port.
Winsage
October 18, 2025
Microsoft has identified a bug affecting HTTP/2 localhost connections and IIS websites after recent Windows security updates, specifically the Windows 11 KB5066835 Patch Tuesday update and the September KB5065789 preview update. Users have reported connection reset errors, such as ERRCONNECTIONRESET and ERRHTTP2PROTOCOL_ERROR, impacting applications like the Duo Desktop app and Visual Studio debugging. The issue is linked to a bug in the HTTP.sys web server used by ASP.NET Core, which can be triggered by various factors including device restarts and update installations. Microsoft has provided steps for resolution, including checking for updates and restarting devices. For non-managed devices, an automatic resolution through Known Issue Rollback (KIR) is available, while enterprise-managed devices require IT administrators to implement KIR group policies. A permanent fix is expected in a future Windows update.
Winsage
March 28, 2025
Microsoft has addressed an issue affecting Remote Desktop Protocol (RDP) and Remote Desktop Services (RDS) connections for users connecting from Windows 11 24H2 to RDS hosts on earlier versions of Windows Server 2016, which arose after installing Windows updates since January 2025. Users reported disconnections after 65 seconds when establishing UDP connections. Affected users were advised to install the KB5053656 preview update to resolve the issue, which will be generally available with next month's cumulative updates. Additionally, Microsoft is working on fixing another issue causing Remote Desktop freezes on Windows Server 2025 and is investigating connection errors related to data restoration on Windows 11 24H2 systems. A bug causing USB printers to print random text has also been resolved.
Winsage
March 27, 2025
Microsoft has acknowledged a significant issue affecting Remote Desktop functionality on Windows Server 2025 systems, which arose after the installation of security updates released since February 2025. Users may experience freezes in Remote Desktop sessions shortly after connecting, with unresponsive mouse and keyboard inputs requiring a disconnect and reconnect to regain functionality. This issue also affects Windows 11 24H2 systems, but Microsoft addressed it for Windows 11 users with an optional update (KB5052093) released on February 25. A fix for Windows Server 2025 devices is planned for an upcoming update. Additionally, Microsoft has implemented Known Issue Rollback (KIR) to reverse problematic non-security updates related to Remote Desktop and Remote Desktop Services (RDS) connection issues from Windows 11 24H2 updates since January 2025. Users may experience Remote Desktop Protocol (RDP) disconnections lasting up to 65 seconds when connecting from Windows 11 24H2 devices to RDS hosts on Windows Server 2016 systems. A permanent fix for RDP disconnection issues is planned for next month's cumulative updates. Microsoft is also investigating connection errors on Windows 11 24H2 systems related to restoring data from SMB network shares or Backup & Replication servers.
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