This problem is occurring across all my spreadsheets since yesterday. If I press Data|Queries & Connections Data|Get Data or Data!Recent Sources buttons, I get the following error message: Excel ran into an unexpected issue. Restarting Excel may help. It doesn't. Nor does deleting Office 365 and reinstalling from scratch. I still cannot access any of these functions and any VBA with data connection functions in it also fails with the same error message and "run time error -2146232828 (80131604)".

Not surprisingly, since my work requires that functionality, I am currently unable to work.

Has anybody seen this sort of error before and has any idea what to do?

Mal