Install a PFX/SSL certificate downloaded from the server on Android/iOS device in a React Native app?

I am building a React Native application that downloads an SSL certificate file or a PFX from the server or a remote file storage. After getting this file, I want to install this certificate onto the device so that only my app can access it. I want to use this certificate to facilitate secure API calls to another server that talks HTTPS. I am assuming that I should use the Keychain on iOS and Keystore on Android for storing the certificate but I am not sure if it enables me to store a PFX. And after storing it, how do I use it for the API calls that I make subsequently?

Too many pop ups on driver install [on hold]

I am setting up a new build machine for my company’s software. We have 7 drivers and previously on Windows 7 it would pop up once with do you trust the company and if you clicked “always trust” and clicked yes it would install all 7 without any more pop ups. The new build from the new build machine it pops up and asks you separately for all 7 drivers even if you click “always trust.” These pop ups are very annoying and we would really like to get it back down to a single pop up as to not annoy our customers. The old build machine has a Symantec code signing certificate that is due to expire. I bought a new Sectigo code signing certificate for the build machine that is being used to sign the 7 drivers that are causing the pop ups. Any idea what might have changed or what I could do to get it back down to a single pop up? Thanks.

How to install Facebook Gameroom on WINE?

Facebook Gameroom is a Windows app for games that can be downloaded from:

I have tried to install it with Ubuntu 18.04 default Wine (1.6) and also with Winehq from upstream (

I have installed and tested dotnet 45, 46 and 461 with winetricks.

The installer got stuck with a message that says “Connecting”.

Perhaps it is relevant to tell I am using Nvidia proprietary driver.

can not install anything and not loading “System” settings

I am using Ubuntu 18.04. I can not load the system settings and when I tried to reinstall nvidia drivers, I get below error:

Preparing to unpack .../libkf5akonadi-data_4%3a18.08.3-7_all.deb ... Unpacking libkf5akonadi-data (4:18.08.3-7) ... dpkg: error processing archive /var/cache/apt/archives/libkf5akonadi-data_4%3a18.08.3-7_all.deb (--unpack):  trying to overwrite '/usr/share/locale/ar/LC_MESSAGES/', which is also in package libkf5akonadicore-bin 4:17.12.3-0ubuntu3 dpkg-deb: error: paste subprocess was killed by signal (Broken pipe) Errors were encountered while processing:  /var/cache/apt/archives/libkf5akonadi-data_4%3a18.08.3-7_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1) 

Kindly help me to resolve above error.


dual booting an HP laptop,4gb ram,intel i3 6006.Windows 10 and ubuntu dual boot, each time i install ubuntu “something else” option in installation

I am installing ubuntu on HP laptop with windows 10 preinstalled . Each time i install ubuntu on a partition the grub is not installing i386 file in /boot/grub folder which causes error as grub searches for that file and run into grub rescue at each boot , hence i cannot boot into ubuntu nor windows , i manually added the file by live usb but failed to make grub config for such changes . My partition show (hd,msdos6) as root . grub is installed on root partition. Grub never installs the i386 file and this file can be found in /usr/lib/grub .

Install alongside win7 what partitions do I need to set?

I’ve got a 40gb unallocated partition on my c: drive. Might be a bit much but it’s ok.
I’m looking to install Ubuntu 19 I’ve seen on some guides that I need to define swap and root stuffs. I’m a linux baby so I really don’t know whats actually needed.
Definitive answer?
16gb Ram, not worried about hibernate if that matters.