The File Block Settings in the Trust Center allow you to choose which file types you want to block from opening. Check the boxes next to each file type that you don’t want to open. You can only check them if you’ve saved the file. The check marks mean that the file type cannot be opened. The file type opens in Protected View. You can also disable editing on the Message Bar or in Backstage view.

Uncheck Excel Add-In Files

When your computer refuses to install the Excel add-in, it’s probably because your antivirus software has blocked it. To install the add-in, you need to use the Add-Ins Manager. This will help you install and remove the add-in. Depending on your antivirus software, you may also have to enable the add-in in the trust center.

The Trust Center can be found by going to File > Options > Trust Center. The left pane of the window will have several settings to configure. In the Advanced Options tab, you can view which add-ins you want to install and remove. You can also view the files that are installed on your system.

To ensure the safety of your files, you must ensure that the add-in folder is in a trusted location. This can be a folder on your hard drive or a server. If the file is in the trusted location, then you can install the Excel add-in in that location.

Once the add-in is installed, it will appear as a new tab or command in the Ribbon. It will also be located in your system’s Windows Explorer. The icon of the folder is a cog. Click the Add-in command to open the Add-in dialog box and add a checkmark next to the add-in name. To close the windows, click twice.

If the add-in still exists, you can uninstall it by restarting Excel. It may also be necessary to reinstall Excel to make it work again. However, you should note that this method only works if the add-in is activated from within Excel. You can also delete the Excel add-in files.

If you don’t want to disable the Excel add-in, you can disable the macros that are created by it. In Excel 2010, the security level for add-in files is too high. To fix this, you can select “Disable Trust Bar Notification” in the trust center. In addition, you can choose to disable all macros by checking the “Uncheck Excel Add-In Files in trust center”.

If you want to enable the macros in Excel, you can make the workbook a trusted document in the Trust Center. In this dialog box, you’ll see all the files that are currently trusted. If any of these files are trusted, you can clear them by clicking the “Clear Trusted Documents” button. Once you’ve unchecked the files, a security warning will appear every time you open the workbook.

Uncheck PowerPoint Add-In Files

If you’ve installed a PowerPoint add-in and you don’t want it to be downloaded, you can disable it in the Trust Center. To do this, open Options and select Trust Center. In the Trust Center, click the Security tab and uncheck the PowerPoint add-in.

To make the file trusted by PowerPoint, you can move it to a trusted location. You can also turn on Protected View and disable warning messages about unsafe content. However, you should disable this feature at your own risk. This feature will prevent the program from opening any file that contains a link that may be dangerous to you.

Uncheck PDF Add-In Files

In order to uncheck PDF Add-In Files in the trust center settings, you need to ensure that the add-in’s security signature matches the one for the document’s security policy. This can be done in several ways. You can either specify the privileged location for the file or use the “trust domain” option to specify the domains that are trusted.

To do this, navigate to Options> Trust Center > Trust Center Settings. Once you’ve done that, you’ll be able to uncheck PDF Add-In Files. After doing so, restart Excel and the add-in should disappear. Both methods, however, only work if the add-in was activated from within Excel.