How to Fix Zoom Screen Sharing Failed to Start? Error 105035 [SOLVED]

Updated on: December 13, 2022
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Zoom is a popular cross-platform software app for having online meetings, lectures, conferences, presentations and events.

The Basic or Free plan of Zoom allows up to 100 participants. A Zoom user can share their webcam video, audio, and their screen with other users in a meeting. This enables natural conversations and presentations between remote users.

Usually, screen sharing works smoothly on Zoom without error. However, sometimes Zoom users get the error code 105035 with the message "Screen sharing has failed to start. Please try again later". But trying again later does not fix this issue.

In this article, we will guide you on the solid steps to take to solve the "zoom screen share not working" issue.

Common FAQs about Zoom Screen Sharing Issues

What is the error 105035 in Zoom screen sharing?

In Zoom meetings client, sometimes screen sharing fails to work. You get the error saying "Screen sharing has failed to start. Please try again later. Error code: 105035". You will keep getting this error every time, until you update or reinstall the Zoom app. You can also modify some Screen Share settings and get the feature to work normally.

Why can't I share my screen on Zoom on Mac?

On Mac, some old versions of Zoom can give you screen sharing error 105035. You need to update or reinstall Zoom to fix this. You can also try to modify certain Screen Share settings, like Enable Remote Control, Limit Screen Share PFS, and Use TCP Connection. In older versions of Zoom on Mac, there is also a fix by renaming "CptHost.app" to "cpthost.app".

Why can't I share my screen on Zoom on Windows?

On Windows, some old versions of Zoom can give you the error 105035 that screen sharing has failed to start. You must update or reinstall Zoom to fix this. You can also modify certain Screen Share settings, like Enable Remote Control, Limit Screen Share PFS, and Use TCP Connection. In older versions of Zoom on Windows, there is also a fix by ending the process "Cptservice" from the Task Manager, and trying screen share again in Zoom.

How do I fix Zoom error code 105035 "screen sharing has failed"?

There are 6 easy & working solutions for solving Zoom screen share fail issue with error code 105035. These fixes are as follows:

  1. Update Zoom to the latest version
  2. Uninstall and Reinstall Zoom
  3. Modify Screen Share Settings
  4. For Mac: Rename "CptHost.app" to "cpthost.app"
  5. For Windows: End "Cptservice" and Retry Zoom Screen Share
  6. Modify Graphics Card Settings for Black Screen Error

The 6 Easy Solutions to Fix Zoom Screen Share Not Working

FIX #1: Update Zoom to the Latest Version

Older versions of Zoom can have some bugs or installation issues. They can cause screen sharing to fail and give the 105035 error. Hence, the best and fastest solution is to update your Zoom meeting client to the latest version.

Note: This tip about updating zoom to fix the screen share issues is applicable for all users. This includes iPhone, iPad, Android, Mac, Windows, Linux, Chrome OS. The screenshots are from Windows 11.

1) Open Zoom, login to your account, and click on the profile pic menu on the top right. Click on "Check for Updates".

2) If a newer version of Zoom is available, they will show the message box "Update Available!". Click on the "Update" button on the bottom right.

3) The Zoom Updater will initialize and start running. It will download the latest version of Zoom.

4) When the download is ready, you can install it.

5) Zoom will start installing the new version.

6) After the installation is successful, Zoom will give you the confirmation.

7) You can again go the Profile Pic Menu > Check for Updates and verify that your Zoom version is up to date.

You can try starting or joining a meeting, and share your screen. As you have the latest Zoom version, the screen share failed error 105035 will no longer be present. You can share your screen successfully.

FIX #2: Uninstall and Reinstall Zoom

If however, you are still getting the 105035 error or other screen sharing issues after updating Zoom, you can try to uninstall your Zoom and then do a fresh install. This fresh installation of Zoom will ensure that there are no directory or registry issues.

Note: This tip about uninstalling and reinstalling Zoom to fix the screen share issues is applicable for all users. This includes iPhone, iPad, Android, Mac, Windows, Linux, Chrome OS. The screenshots are from Windows 11.

1) Go to the search function on Windows taskbar.

2) Search for "Control Panel". Select Control Panel from the Best Match list, and click on "Open".

3) In the Control Panel, choose View by: Category. This will simplify the control panel options. Then look for "Uninstall a program".

4) In the Uninstall or change a program menu, look for "Zoom" application. Click on it, and then click on the "Uninstall" button.

5) The Zoom Uninstaller will initialize and start uninstalling Zoom application and deleting all the directories and files.

6) Once the uninstallation is completed, you can open a browser and go to the Zoom Download Center page. There, look for the Zoom application for your OS or platform. Click on the Download button next to it.

7) The Zoom Installer will download to your device.

8) Once it has finished downloading, click on it to run the Zoom Installer.

9) The Zoom Installer will install the Zoom application properly, with all directories, files, and registries correctly set. You will get the installation confirmation.

Now you can open Zoom, login to your account, and start using Zoom to run your online meetings. The screen share function should be working normally as well and the error 105035 will be gone.

FIX #3: Modify Screen Share Settings

For fixing the screen share issue, there are 3 screen share setting options of particular interest.

  1. Enable Remote Control
  2. Limit Screen Share FPS
  3. Use TCP Connection

Note: This tip about modifying Zoom screen share settings to fix the screen share issues is applicable for all users. This includes iPhone, iPad, Android, Mac, Windows, Linux, Chrome OS. The screenshots are from Windows 11.

SETTING #1: Enable Remote Control

1) Click the Settings gear icon on top right.

2) Choose the Screen Share category. Select the setting "Enable the remote control of all applications".

3) Windows will ask you to confirm the changes you wish to make to the Zoom app. Approve it.

Enabling this setting has solved screen share 105035 error for many users.

SETTING #2: Limit Screen Share FPS

1) Click the Settings gear icon on top right.

2) Choose the Screen Share category. At the bottom, click on the "Advanced" button.

3) Enable the option "Limit your screen share to". Select any value less than 10 frames-per-second from the dropdown.

By reducing the FPS setting for the screen share, users have been able to solve their screen share error 105035.

SETTING #3: Use TCP Connection for screen sharing

1) Click the Settings gear icon on top right.

2) Choose the Screen Share category. At the bottom, click on the "Advanced" button.

3) Enable the option "Use TCP connection for screen sharing". As the tooltip next to it says, "Select this option when you cannot see content on the shared screen or when others cannot see your content on the shared screen."

Toggling between the TCP connection and default connection can help solve the blank screen share issues.

FIX #4: Special Case for Mac OS: Rename "CptHost.app" to "cpthost.app"

There is a special solution for the screen sharing issues in Mac OS. If updating, reinstalling or modifying screen share settings doesn't solve the issue, try this fix. Thanks to the Zoom Community post for this solution.

1) In Mac, the screen share error happens sometimes due to the Apple File System formats being case-sensitive. First, close Zoom and open Finder.

mac apfs case sensitive

2) Press the keyboard shortcut: Command + Shift + G

3) Copy-paste this string in the search textbox: "/Applications/zoom.us.app/Contents/Frameworks"

mac finder zoom app package content

4) Go to that location, and find the file "CptHost.app".

mac zoom app contents cpthost rename

5) Rename it to "cpthost.app".

6) Now run Zoom again and try screen sharing. Changing the file name of CptHost.app to lower-case helps fix the screen share error for many users in older versions of Zoom.

FIX #5: Special Case for Windows: End "Cptservice" and Retry Zoom Screen Share

There is a special solution for the screen sharing issues in Windows. If updating, reinstalling or modifying screen share settings doesn't solve the issue, try this fix. Thanks to the Zoom Community post for this solution.

1) When Zoom is giving you screen sharing failed error, open the Task Manager.

2) In the Task Manager, go to Details, locate the process named "Cptservice". End this process by selecting it, pressing delete button OR clicking on "End task" button in the bottom right.

3) Now open Zoom and try sharing screen. This will restart the "Cptservice" process as well.

4) Doing the above steps has fixed the screen sharing error in Windows for many users, in older versions of Zoom.

FIX #6: Fix Black Screen by Modifying Graphics Card Settings

The black screen during screen sharing can happen due to a graphics card setting. There can be some automatic-graphics switching with an Nvidia card, for example.

1) From the Windows search, find and open "Nvidia Control Panel".

windows search nvidia control panel

2) Click on "Manage 3D Settings".

3) You will see the section "I would like to use the following 3D settings". Under it, click on "Program Settings".

4) Below "1. Select a program to customize", click on "Add" button.

5) Then click on the "Browse" button.

6) Navigate to the Zoom bin directory (C:/>Users>YOURUSERNAME>AppData>Roaming>Zoom>bin)

7) Find the file "Cpthost.exe", select it and click "Open".

8) Then, below "2. Select the preferred graphics processor for this program", choose "Integrated graphics" from the dropdown.

9) Click on the "Apply" button to save the changes.

10) Now try to do screen sharing in Zoom.

Final Words

Due to various reasons like bugs, settings or file naming errors, you can sometimes get the 105035 error that "Zoom Screen Sharing has failed to start". In this article, we have given you the best and fastest solutions on how to fix the zoom screen share not working issue and fix the zoom error code 105035. We hope you are able to use screen sharing in Zoom normally and have successful meetings, presentations, and online events!

zoom screen sharing has failed error 105035 blogsaays

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