Cannot open TMs after upgrade

We upgraded from CU9 to CU10 last night and this morning we now cannot open or download any of our TMs.

In SDL Groupshare UI, we get the error message: TM task status: Failed. Task id: b45f3066-73b8-4ec6-ac47-b6ac968f9712

In Trados Studio, we get: "An error has occurred while using the translation provider XXX: One or more errors occurred."

Any help is appreciated.