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JunOS : logger: transfer-file failed to transfer /var/transfer/config/juniper.conf.gz

Having the following log error entry using the archival function to backup your configuration on your Juniper device? logger: transfer-file failed to transfer /var/transfer/config/re0.HostName_juniper.conf.gz_20181129_034459 I have experienced the following, where no further details provided, under the following conditions : – The backup server (ftp, sftp) is reachable and working properly – The credentials to the… Read More »

Windows : Feature update to Windows 10, version 1803 – Error 0x8007007e

I have encountered the following error while attempting to install the latest Windows Updates (on Windows 10). Feature update to Windows 10, version 1803 – Error 0x8007007e The update was blocking at “Status: Installing – 49%” and then failing. It appeared that since this PC have not been updated for a while, the update version 1803… Read More »

Linux : How To send a copy of outgoing emails of a sender to another address with Exim/cPanel

This article will show you how to copy all outgoing email (transparently) of a specific user to another email account with Exim/cPanel. There is no built-in feature to do so, but we will use the Exim highly flexible filter scripting capability that can be achieve from the command line. 1. Log into your cPanel server… Read More »

Windows : Install Ubiquiti Unifi SDN Controller as a service

If you are operating Ubiquiti wireless gear compatible with the Unifi controller, and running it on a Windows machine, you may have noticed that you need to start the application manually every time you restart the computer. Fortunately, there is a way of adding it “as a service”, just like any OS/system services. Follow the… Read More »

JunOS : LIBJNX_FILE_SYSTEM_FAIL: /var/transfer/config/: No such file or directory

Encountered such issue in your log file of your Juniper network device? LIBJNX_FILE_SYSTEM_FAIL: /var/transfer/config/: No such file or directory This is most likely related to your configuration archival (backup), with such statement :

set system archival configuration [transfer-on-commit | transfer-interval]
set system archival configuration archive-sites "scp://user@IP_Address/path/to/folder" password "USER_Password"

1 2	set system archival configuration [transfer-on-commit \| transfer-interval] set system archival configuration archive-sites "scp://user@IP_Address/path/to/folder" password "USER_Password"

This is most likely caused by filesystem corruption and/or inexisting transfer folder on the filesystem. To resolve this issue, enter into… Read More »

Windows : Remote Desktop crash immediately after session opening

I ran on this issue where the Remote Desktop Client crashed the second it opened the session. There was a related entry in the Event Viewer that stated the following : Faulting application name: mstsc.exe, version: 10.0.17134.112, time stamp: 0x82251f4e It turned out that the issue was caused by a mapped printer. To resolve this… Read More »

Windows : How to remove license key and unregister

You may require sometimes to remove the license from a Windows installation, whatever this is to re-assign a license to another machine, or before publishing an appliance, etc. Follow this procedure to put back your Windows installation to the original installation state, license wise. The following commands need to be performed with the Command Prompt… Read More »

JunOS : Upgrade return ERROR: Package signature validation failed. Aborting install.

Experiencing the following error while upgrading JunOS? Verify the signature of the new package verify-sig: cannot validate certs.pem certificate is not yet valid: /C=US/ST=CA/L=Sunnyvale/O=Juniper Networks/OU=Juniper CA/CN=PackageProductionRSA_2018/emailAddress=ca@juniper.net ERROR: Package signature validation failed. Aborting install. This error could be caused by incorrect date and time set on your device (back in time). To validate the current value,… Read More »

Linux : There is no screen to be resumed matching …

Using “screen” on Linux to perform your important work? Way to go, SysAdmin 🙂 Then you might at some point encountered the following behavior – while attempting to resume a session using “screen -r”, the following message occurred : There is a screen on: 1610.pts-0.host (25/08/18 08:25:36 PM) (Attached) There is no screen to be… Read More »

Windows : How to display a message at the Windows logon

Similar as what you can do on linux with the Message Of The Day (MOTD), there is a way to display a message to users when they login to their session. Microsoft refer to this as a “legal notice” and can be achieved through the registry. 1. Open the Windows Registry Editor with elevated privileges… Read More »