Hi Michael, when i try to create multiple instances of the API object like this: from ovirtsdk.api import API url = 'xxx' username = 'admin@internal' password = 'yyy' a1 = API(url, username, password) a2 = API(url, username, password) I get this error: Traceback (most recent call last): File "test.py", line 8, in <module> a2 = API(url, username, password) File "/home/geertj/Source/ovirt-engine-sdk/src/ovirtsdk/api.py", line 47, in __init__ Mode.R) File "/home/geertj/Source/ovirt-engine-sdk/src/ovirtsdk/infrastructure/contextmanager.py", line 53, in add raise ImmutableError(key) ovirtsdk.infrastructure.errors.ImmutableError: [ERROR]::'proxy' is immutable. Any ideas? Thanks, Geert