exchangelib -- workaround found

[twallace12]

Last week (week of Aug. 23 or so 2017), my python scripts that use exchangelib stopped working on both Linux Ubuntu and Windows 7 64 bit. I traced the issue to this line:

account = Account(primary_smtp_address='someone@somewhere.org', credentials=credentials,autodiscover=True)

Here are the error messages:

EWS https://outlook.office365.com/EWS/Exchange.asmx, account None: Exception in _get_elements: Traceback (most recent call last): File "/usr/local/lib/python3.5/dist-packages/exchangelib/services.py", line 74, in _get_elements response = self._get_response_xml(payload=payload) File "/usr/local/lib/python3.5/dist-packages/exchangelib/services.py", line 161, in _get_response_xml new_version = Version.from_response(requested_api_version=api_version, response=r.text) File "/usr/local/lib/python3.5/dist-packages/exchangelib/version.py", line 248, in from_response api_version_from_server = info.get('Version') or build.api_version() File "/usr/local/lib/python3.5/dist-packages/exchangelib/version.py", line 102, in api_version return self.API_VERSION_MAP[self.major_version][self.minor_version] KeyError: 20

Traceback (most recent call last): File "365debug.py", line 16, in account = Account(primarysmtp_address='someone@somewhere.org', credentials=credentials,autodiscover=True) File "/usr/local/lib/python3.5/dist-packages/exchangelib/account.py", line 68, in _init credentials=credentials, verifyssl=verify_ssl) File "/usr/local/lib/python3.5/dist-packages/exchangelib/autodiscover.py", line 186, in discover protocol=protocol) File "/usr/local/lib/python3.5/dist-packages/exchangelib/autodiscover.py", line 330, in _autodiscover_quick verify_ssl=protocol.verify_ssl) File "/usr/local/lib/python3.5/dist-packages/exchangelib/protocol.py", line 173, in _call protocol = super(CachingProtocol, cls).call(args, *kwargs) File "/usr/local/lib/python3.5/dist-packages/exchangelib/protocol.py", line 226, in init self.version = Version.guess(self) File "/usr/local/lib/python3.5/dist-packages/exchangelib/version.py", line 194, in guess return cls._guess_version_from_service(protocol=protocol, hint=api_version) File "/usr/local/lib/python3.5/dist-packages/exchangelib/version.py", line 226, in _guess_version_from_service ResolveNames(protocol=protocol).call(unresolved_entries=[protocol.credentials.username]) File "/usr/local/lib/python3.5/dist-packages/exchangelib/services.py", line 975, in call return_full_contact_data=return_full_contact_data, File "/usr/local/lib/python3.5/dist-packages/exchangelib/services.py", line 74, in _get_elements response = self._get_response_xml(payload=payload) File "/usr/local/lib/python3.5/dist-packages/exchangelib/services.py", line 161, in _get_response_xml new_version = Version.from_response(requested_api_version=api_version, response=r.text) File "/usr/local/lib/python3.5/dist-packages/exchangelib/version.py", line 248, in from_response api_version_from_server = info.get('Version') or build.api_version() File "/usr/local/lib/python3.5/dist-packages/exchangelib/version.py", line 102, in api_version return self.API_VERSION_MAP[self.major_version][self.minor_version] KeyError: 20

[twallace12]

The problem for me was that the major_version and minor_version returned by the Exchange Server are of 15 and 20
However the minor_version 20 doesn't exists in the version_map of the library. If you want it to work you can hotfix this by setting hardcoded value to not have a key error.
The file to modify is located in /usr/local/lib/python3.X/dist-packages/exchangelib/version.py
Line 102 I replaced major_version by 15 and minor_version by 1.

[ecederstrand]

Just for the record, this GitHub project is for pyexchange, not exchangelib.