I'm running a program which becomes highly unstable when I ALT-TAB out of it unless explorer.exe is shutdown. This worked well until yesterday, I would just restart explorer.exe and resume normal usage. After restarting explorer.exe and when I try to open any folder I get this error: "The Remote Procedure Call failed and did not execute." RPC is Started and Automatic in services.msc. RPC Locator is not started and on Manual. Please do not tell me to restart. The computer carries out file server tasks using Wampserver and it thus inherent that shutting down is to be avoided. Moreover, this issue did not occur before so it is a problem with Windows, not a built-in limitation of any sort.