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How to fix SSL error err sslversion or cipher mismatch

The error ERR_SSL_VERSION_OR_CIPHER_MISMATCH occurs when a user's browser cannot establish a secure connection with a web server that uses #HTTPS and SSL. 

The issue may lie in the server configuration or locally on a user's #computer.

Also, the ERR SSL VERSION OR CIPHER MISMATCH error could be caused by certain security settings. 

Applying changes to the SSL might help you solve the annoying ERR SSL VERSION problem. 

Sometimes switching to another browser can be the easy fix you need.


1. Set correct system date, time & region.

2. Clear Chrome's cache and cookies.

3. Disable #QUIC Protocol.

4. Disable extensions.

5. Remove your system's hosts file.

6. Clear SSL State.

7. Lower your internet security and privacy level.

8. Disable your security tools for a moment.

Error such as Err_ssl_version_or_cipher_mismatch tend to pop up when there is a inappropriate configuration in the SSL certificate.

Easy way to convert cPanel SSL Certificate from PEM format to PFX

pem is a de-facto file format called Privacy-Enhanced Mail. These are interchangeable file extensions for the PKCS#12 format. 

Technically, PKCS#12 is the successor to Microsoft's PFX format, but they have become interchangeable. PKCS#12 files are archives for cryptographic material.

PKCS#12 (also known as PKCS12 or PFX) is a binary format for storing a certificate chain and private key in a single, encryptable file.

All SSL Certificates require a private key to work. The private key is a separate file that's used in the encryption/decryption of data sent between your server and the connecting clients.

A private key is created by you—the certificate owner—when you request your certificate with a Certificate Signing Request (CSR).

Basically, the default SSL file format used by apache web server is the PEM format. Whereas PFX files are used on MacOS and Windows systems to do export and import activities of private keys and certificates.

How to securely back up your Linux Ubuntu Centos and Debian Server

#Backup and #restore refers to technologies and practices for making periodic copies of data and applications to a separate, secondary device and then using those copies to recover the data and applications—and the business operations on which they depend in the event that the original data and applications are lost.

#rsync uses what is called a delta-transfer algorithm which compares files from source and destination and sends only the differences between them.

To automatically backup #files and directories in Linux:

1. archive the content. Backing up your files using tar is very simple using the following command: # tar -cvpzf /backup/backupfilename.tar.gz /data/directory.

2. create backup script. Now let's add tar command in a bash script to make this backup process automatic.

#Rsync, or Remote Sync, is a free command-line tool that lets you transfer files and directories to local and remote destinations. 

Rsync is used for mirroring, performing backups, or migrating data to other servers.

Backing up file systems means copying file systems to removable media (such as tape) to safeguard against loss, damage, or corruption. 

Restoring file systems means copying reasonably current backup files from removable media to a working directory.

Data losses can be a very frustration encounter for a server owner. To avoid such catastrophic situations in losing your website data, it is very important to do a regular backup for your server and website.

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