It seems there might be an issue with the network configuration on the PC that loses sight of the printer. This could be related to network settings, printer drivers, or the router's settings. I recommend checking the following steps to address the problem:
IP Address: Ensure that the printer and both PCs have static IP addresses or are properly configured to obtain IP addresses from the router's DHCP server.
Printer Drivers: Make sure that the correct printer drivers are installed on both PCs. Sometimes outdated or incompatible drivers can cause connectivity issues.
Firewall and Security Software: Check if any firewall or security software on the PC is blocking communication with the printer. Temporarily disabling these programs for testing can help identify if they are the cause.
Network Sharing: Confirm that network sharing is enabled on the printer and the PCs. This will allow the devices to communicate with each other.
Router Settings: Review the router's settings to ensure that it's not causing the issue. Sometimes, routers can have settings that affect device visibility.
Network Troubleshooting: Run network troubleshooters on both PCs to identify and fix any network-related problems. This can often resolve connectivity issues.
Firmware Updates: Ensure that your router, printer, and PCs have the latest firmware updates installed. Sometimes updates can address compatibility issues.
Network Range and Signal Strength: Check if the PC experiencing issues has a weaker Wi-Fi signal compared to the other devices. You might need to reposition the router or PC to improve signal strength.
If the issue persists, it might be beneficial to contact your router or printer manufacturer's support for more advanced troubleshooting steps tailored to your specific devices and network setup.
