How to Fix: Putty fatal error - out of memory

The 'Putty fatal error - out of memory' issue affects users who try to SSH into a Linux box using Putty, but can successfully connect using other tools like WinSCP or SmartTTY. This error is frustrating because it prevents users from establishing a secure connection to the Linux box, hindering their ability to perform tasks and manage files remotely.

The 'out of memory' error message in Putty indicates that the application is unable to allocate sufficient memory to process the SSH connection. This can be caused by various factors, including the size of the data being transferred, the complexity of the Linux box configuration, or even a lack of available RAM on the user's machine.

💡 Why You Are Getting This Error

• The primary reason for this error is that Putty is not optimized to handle large amounts of data transfer efficiently. When dealing with larger files or complex configurations, Putty may struggle to allocate sufficient memory, leading to the 'out of memory' error.
• An alternative cause could be a misconfigured Linux box or a firewall blocking the SSH connection. In some cases, the issue might also be related to the user's machine not having enough available RAM or CPU resources to handle the SSH connection.

🛠️ Step-by-Step Verified Fixes

🎯 Final Words

To resolve the 'Putty fatal error - out of memory' issue, try increasing Putty's memory allocation by adjusting the MTU and buffer size settings. If this doesn't work, consider using a different SSH client like WinSCP or SmartTTY, which may be more efficient at handling large amounts of data transfer.