If your application requires non-English error messages or UI elements, download the corresponding language pack from Microsoft’s Language Pack Directory .
On the second host, things were slightly different. A long-lived in-memory cache started leaking objects after the update, memory climbing gently until the process quit under pressure. The logs pointed to a subtle timing change in how finalizers were scheduled. It was obscure, but it explained the previous month’s specter of instability. Mark rolled the update back on that machine, restored the snapshot, and opened a support thread with the vendor whose library relied on the GC behavior. download net framework 462 upd