Find was stopped in progress in VS

There has been a bug in Visual Studio since the 90s where you are searching in files, but the find operation stops very quickly after starting (and hence gives no results). The output window shows ‘Find was stopped in progress’. This is caused by pressing Ctrl+ScrollLock (usually done inadvertently when Ctrl+Break). The solution is to press Ctrl+ScrollLock again, then you should be able to ‘Find in Files’ again.