Ever since the periodic automatic Windows 10 update a couple of weeks ago, I have been getting the following pop-up error every time I open MS Excel: "Microsoft Office Excel - stdole32.tlb - OK" (snapshot attached). After clicking OK, another pop-up says "Configuring Microsoft Office Home and Student 2007 ..." The configuration process takes about 45 seconds, and then Excel finally opens.
When I open MS Word, a similar configuration process initiates, but automatically, i.e., without the stdole32.tlb pop-up. It takes about 30 seconds to complete the configuration.
I have run Malwarebytes and also a Windows Defender full system scan: no threats found.
I then attempted to restore the original registry by closing out all other processes and importing the back-up that I had created. The import failed, and the pop-up said: "Registry Editor - Cannot import C:\registry backup.reg: Not all data was successfully written to the registry. Some keys are open by the system or other processes, or you have sufficient privileges to perform this operation."
So, two problems now: stdole32.tlb error and apparent registry corruption. Helpful advice would be appreciated.