Need help?

Our experts have had an average response time of 11.7 minutes in August 2021 to fix urgent issues.

We will keep your servers stable, secure, and fast at all times for one fixed price.

Access denied to VNC Server – How to resolve

by | May 3, 2021

Wondering how to resolve ‘Access denied to VNC Server’ error? We can help you with it.

Usually, error occurs while trying to connect to a VNC server using a cloud connection.

As a part of our Server Management Services, our Support Engineers helps to fix similar VNC errors regularly.

Today let us discuss some common causes for this error and how our Support Engineers tackle them.


Causes for ‘Access denied to VNC Server’ error

While trying to connect to a VNC server using a cloud connection, we may receive the errors given below:

Access denied to VNC Server; please sign in to connect
Access is denied

Both the error messages deny access to VNC server and we will not be able to connect to VNC server.

Typically, errors look like below

Error: Access denied to VNC Server; please sign in to connect

Access denied to VNC Server

This message means that our VNC account has been signed out of VNC Viewer. This will happen if we have recently changed the password for our VNC account, for instance.

We can check why this has happened by clicking the red cross next to our name in the top right of VNC Viewer.

Error: Access is denied

Access denied to VNC Server


Solutions for errors

Let us see the steps that our support engineers followed to fix the error.

Solution for Error: Access denied to VNC Server; please sign in to connect

To resolve the issue, click Sign in again and enter our RealVNC account credentials.

Once we see a green tick/check mark in the top right next to our name, try connecting to the VNC Server again.


Solution for Error: Access is denied

To allow other users and groups to connect, we will need to add the user or group to VNC Server’s Users & Permissions.

We can either add a group of pre-registered users or individual accounts. Users can be registered from both local and domain accounts and groups.

When running VNC Server on Windows, users and groups can be selected using the Object Picker UI.

Once the user has been added, permissions can be set for that user/group and users should now be able to authenticate successfully.


[Need help to harden Nagios XI server? We’d be happy to assist]


In short, this error occurs while trying to connect to a VNC server using a cloud connection. Today, we saw how our Support Engineers resolve this error message for our customers.



Are you using Docker based apps?

There are proven ways to get even more out of your Docker containers! Let us help you.

Spend your time in growing business and we will take care of Docker Infrastructure for you.


var google_conversion_label = "owonCMyG5nEQ0aD71QM";


Submit a Comment

Your email address will not be published. Required fields are marked *

Privacy Preference Center


Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website. The website cannot function properly without these cookies.

PHPSESSID - Preserves user session state across page requests.

gdpr[consent_types] - Used to store user consents.

gdpr[allowed_cookies] - Used to store user allowed cookies.

PHPSESSID, gdpr[consent_types], gdpr[allowed_cookies]


Statistic cookies help website owners to understand how visitors interact with websites by collecting and reporting information anonymously.

_ga - Preserves user session state across page requests.

_gat - Used by Google Analytics to throttle request rate

_gid - Registers a unique ID that is used to generate statistical data on how you use the website.

smartlookCookie - Used to collect user device and location information of the site visitors to improve the websites User Experience.

_ga, _gat, _gid
_ga, _gat, _gid


Marketing cookies are used to track visitors across websites. The intention is to display ads that are relevant and engaging for the individual user and thereby more valuable for publishers and third party advertisers.

IDE - Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.

test_cookie - Used to check if the user's browser supports cookies.

1P_JAR - Google cookie. These cookies are used to collect website statistics and track conversion rates.

NID - Registers a unique ID that identifies a returning user's device. The ID is used for serving ads that are most relevant to the user.

DV - Google ad personalisation

IDE, test_cookie, 1P_JAR, NID, DV, NID
IDE, test_cookie


These are essential site cookies, used by the google reCAPTCHA. These cookies use an unique identifier to verify if a visitor is human or a bot.