Before MS Office 2007, when you opened an .xls file with embeddings or links, Excel politely asked whether or not the content of the sheet should be updated. This has now become much more complicated.

MS Office 2007 has new feature called Trust Center. The security levels that were used in earlier versions of Office are now replaced with a more streamlined security system.

When you open a file with links or embeddings, Excel will display a security warning:

If you click on the options button, a dialog is displayed allowing you to enable the connections.

Excel 2007 will start ThermaCAM Researcher in advance, even before you double-click on the embedding. This can cause problems when you connect to the camera.

When you double-click on the ThermaCAM Researcher embedding, its links will still not automatically go live. Choose Data/Edit links from the Excel menu. In the Edit links dialog, press Ctrl-A to select all the links of the sheet and click on Update Values. Close the dialog.

If you want to open a workbook that contains a data connection without receiving security warnings, you have to change the settings of the Trust Center. To find it, click this button and select Excel options and Trust Center.

In the Trust Center External Content tab, there is a Security Setting for Workbook Links that you can enable if you like. Microsoft does not recommend this.

Another way to open a workbook that contains a data connection without receiving security warnings is to put the file in a Trusted Location listed the Trusted Locations tab of the Trust Center. Microsoft does not recommend adding the whole of My Documents to this list.