Troubleshooting Slido for PowerPoint

  • 11 March 2021
  • 0 replies

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Thanks for downloading Slido for PowerPoint! Have a look at the list below and scroll to the right section based on what fits your description best.

Essential troubleshooting based on the issue: 


Solutions related to various computer settings: 


If none of these solutions will help, you can report an issue to our support team.



I can’t see the Slido button in PowerPoint


The Slido button always appears under the Home tab. If you can’t see it there, complete the following steps.

  1. Close PowerPoint
  2. Right-click the Slido icon in the system tray (bottom-right corner) and click Exit
  3. Restart your computer (recommended)
  4. Click Start, search Slido and launch the application
  5. Open PowerPoint

🎥 Watch this how-to video


❓Didn’t work? Continue with the steps below. The Add-in may be disabled or inactive.


Add-in is disabled. How do I enable it?

  1. Go to PowerPoint and click File
  2. Select Options and then Add-ins
  3. Pick “Disabled” from the drop-down at the bottom and click Manage
  4. Select Slido in the list, click Enable and Close.
  5. Click File, select Options and click Add-ins again
  6. Go back to the drop-down below and select “COM Add-ins”
  7. Check off Slido and click OK
  8. Find the Slido button under Home tab

🎥 Watch this how-to video


Add-in stays inactive. How do I activate it?

  1. Click Search in Windows
  2. Type “Change User Account Control” and launch the application
  3. Move the slider to the second position from top.
  4. Click OK
  5. Restart the computer (recommended)

🎥 Watch this how-to video



💡 If this control isn’t available or it jumps back to the default position after restart, please contact your IT or system administrator.



Polls, Quiz or Q&A do not work in presentation mode. The slide stays white.


One of the reasons why this may be happening could be your network setting. Click “Show content”, copy-paste the text and send it to your IT Department to add an exception for Slido.

Text to send to your IT admin:

Slido for Windows currently doesn’t support proxy authentication of any kind. The processes -- Powerpnt.exe, Slido.exe and CefSharp.BrowserSubprocess.exe need to be able to run and connect to the following domains in order for the Slido add-in in PowerPoint to function properly.




If you’re using some type of firewall or proxy server, you can make the above mentioned domains to be accessed by the Add-in processes. The rules or exceptions would need to be configured using the domain masks instead of entering specific IP addresses as we use dynamic IP addresses.


Sidebar isn’t loading and stays white (or shows an error)


One of the reasons why this may be happening could be your computer policy set by your system administrator. Click “Show content”, copy-paste the following text and send it to your IT admin to adjust the rules.


Text to send to your IT admin:

If you’re using Microsoft Intune to manage the devices, the Attack surface reduction policy is enabled which blocks any Microsoft Office applications from creating processes. Also, Windows Defender may be blocking some parts of the Slido Add-in, too.


You can adjust the Endpoint Security Policy to exclude Slido for PowerPoint installation path from ASR rules. Here are the steps:

  1. Open Microsoft Intune and go to Endpoint security

  2. In the Manage section, open Attack surface reduction

  3. Click Create Policy

  4. Use Platform: Windows 10 and Profile: Attack Surface Reduction rules

  5. Click Create

  6. Go through the wizard and configure the policy. Enter the path C:\Users\*\AppData\Local\Slido\Slido for Windows in the Exclude files and paths from attack surface reduction rules policy.

  7. Include installed subfolders too.

If you need help or have questions, contact



Enable User Account Control

Slido for Windows requires the User Account Control to be enabled in Windows. You’ll need administrator rights to change the User Account Control settings.



  • Slido add-in stays inactive in the list of add-ins in the PowerPoint Options dialog.
  • You cannot access Slido from the Home tab in PowerPoint.
  • The Slido for Windows will show this error in the COM Add-ins dialog:

“Not loaded. A runtime error occurred during the loading of the COM Add-in.”


Error message in COM Add-ins


Fixing the problem:

To enable User Account Control, you’ll need administrator computer rights:

  1. Open the Start menu on your computer
  2. Start typing Change User Account Control settings and launch the application
  3. Use the slider to select the 2nd value from top named ‘Notify me only when apps try to make changes to my computer (default)
  4. Click OK to save changes
  5. Restart the computer


Enabling User Account Settings


For more information go to User Account Control documentation. 



Download the Admin installer if you’re using a built-in administrator account

As the basic installation of Slido for Windows is not compatible with the built-in Administrator account, you’ll need the Slido for Windows admin installer to be able to use Slido in PowerPoint.


  • Slido add-in is listed in the Inactive Application Add-ins in PowerPoint Options dialog.
  • You cannot access Slido from the Home tab in PowerPoint
  • When you manually enable Slido for Windows add-in under add-ins, it will not activate, and this error will show in the COM Add-ins dialog:

“Not loaded. A runtime error occurred during the loading of the COM Add-in”

Fixing the problem:

  1. Open Program and Features dialog from Control Panel
  2. Uninstall the Slido for Windows basic installation
  3. Download the Slido for Windows admin installer
  4. Install Slido for Windows from the MSI file

Run PowerPoint and the Slido button will be available in the Home tab in PowerPoint now.


For more information read the Download Slido for PowerPoint for Admins article. 



Slido add-in is blocked by Group Policies

The Group Policy settings may cause Slido add-in not being enabled in PowerPoint. 


• Slido add-in is not enabled in the Add-Ins section of the PowerPoint Options dialog box.

• If you then open the COM Add-ins dialog box by clicking Go… button, you cannot enable any of the listed add-ins

• Selecting any add-in from the list prompts the following text in the COM Add-ins dialog box:

“The add-in you have selected is disabled by your system administrator.”



Fixing the problem: 

Through Group Policy, an administrator can manage the add-ins that are loaded in Microsoft Office programs. Contact your IT administrator to enable the Slido add-in in Group Policy.

The following Group Policy settings are used to manage this functionality:

  • The list of managed add-ins
  • Block all unmanaged add-ins
  • Disable all application add-ins
  • Disable Trust Bar Notification for unsigned application add-ins and block them
  • Require that application add-ins are signed by Trusted Publisher


For more information visit No Add-ins loaded due to group policy settings - Office 365 (Microsoft Docs).




Reporting an issue to our support team

If this guidance hasn’t helped, we’re happy to help! Start a chat from our website or send us an email at

Please include the log files in your email or add them as an attachment in the chat.


How to get logs

  1. Click Start, type Slido and launch it
  2. Right-click the “S” icon in the system tray (bottom-right corner)
  3. Select Get logs
  4. Attach the generated .zip file to the email

🎥 Watch a how-to video




Curious about more? 



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