VirtualBox Guest Additions not working in Lubuntu 17.04 – Solved

Environnement: Host OS: Windows 10 x64 VirtualBox Graphical User Interface Version 5.1.26 r117224 (Qt5.6.2) Guest OS: Lubuntu 17.04 VBOXADDITIONS_5.1.26_117224 Problem: I manually installed VirtualBox Guest Additions from VBOXADDITIONS_5.1.26_117224 ISO and restarted the guest. The bidirectional clipboard and the drag and drop still not working. Solution: Installation of Guest Additions from Ubuntu repository. Command: sudo apt-get install virtualbox-guest-dkms … Read moreVirtualBox Guest Additions not working in Lubuntu 17.04 – Solved

cPanel not starting with Internal Server Error – fix

The problem: All websites are down with Internal Server Error 500 Symptoms: Cpanel wasn’t loading with the following error: Internal Server Error 500 Can’t fork: Cannot allocate memory at /usr/local/cpanel/Cpanel/SafeRun/InOut.pm line 40. cpsrvd/11.62.0.15 Server at hostname.example.com How I fixed it? First of all I was trying to increase this limit by searching for “Max cPanel … Read morecPanel not starting with Internal Server Error – fix

How to sync Microsoft Outlook with Google Calendar and other CalDav Calendars

For this purpose we need to use Outlook CalDav Synchronizer. Here are the features and description from developer: Free Outlook Plugin, which synchronizes events, tasks and contacts between Outlook and Google, SOGo, Horde or any other CalDAV or CardDAV server. Supported Outlook versions are 2016, 2013, 2010 and 2007. Features: free and open-source software (FOSS), … Read moreHow to sync Microsoft Outlook with Google Calendar and other CalDav Calendars

Windows Server 2008 PDC external time

Internet time is hidden from control panel. As a PDC, Windows Server 2008 need to be synchronized with external source. You can select the closest NTP server from http://www.pool.ntp.org/en/ Microsoft recommends (quote from technet.microsoft.com): Click Start, and then click Command Prompt. In the Command Prompt window, type the following line, where peers is a comma-separated … Read moreWindows Server 2008 PDC external time

Blocking spambots with SCROLLOUT F1 and fail2ban

I asume that you have a fuly functional SCROLLOUT F1 instalation and you want to add spambot blocking feature. Ad the following line to /etc/apt/sources list deb http://ftp.debian.org/debian unstable main Then run apt-get update apt-get -t unstable install fail2ban cd /etc/fail2ban cp jail.conf jail.local Edit jail.local [postfix] enabled = true port = smtp,ssmtp filter = … Read moreBlocking spambots with SCROLLOUT F1 and fail2ban

How to recover ext4 from GPT partitioned disk

Hard drive sizes had increased dramatically in last several years, but block device drivers are still outdated. For hard drives more than 1TB currently seems to be an advantage to use GPT instead of legacy MBR partition table. You can see more details at http://en.wikipedia.org/wiki/GUID_Partition_Table . One of the inevitable disadvantage of GPT is the … Read moreHow to recover ext4 from GPT partitioned disk

Clear DNS cache windows

Operating systems affected: MicrosoftTM Windows XP, Windows Vista, Windows 7 To clear dns cache: ipconfig /flushdns To restart dnscache service: net stop dnscache net start dnscache You can also do this visually from MMC. Just type services.msc in run/search and use appropriate command in order to restart dnscache service. Benefits: could solve web browsing problems … Read moreClear DNS cache windows