Some applications don't support NTLM authentication.
The following is a list of applications known not to support authenticated proxies (NTLM Identification / NTLM Authentication / Proxy Authentication):
|Application||Knowledge base article|
|Windows updates (Covered by our Software Updates category)||Why can't I get Windows or Office 2010 updates?|
|MS Office (Covered by our Software Updates category)||Why can't I get Windows or Office 2010 updates?|
|SkyDrive / OneDrive||Follow Solution steps.|
|Adobe updates (Covered by our Software Updates category)||Follow Solution steps.|
|Sophos Anti Virus (Covered by our Software Updates category)||Using Sophos Anti-Virus® results in slow browsing experience|
|AVG Anti Virus||Follow Solution steps.|
|Dropbox||Why am I unable to access Dropbox™?|
|iTunes (Covered by our iTunes category)||Allowing Access to iTunes®|
|join.me||Follow Solution steps.|
|GoToMyPC||Follow Solution steps.|
|LogMeIn123rescue||Allowing Access to Logmein®123|
|SAGE and HMRC Payroll Application||Allowing Access to Sage|
|Capita SIMS (Capita Broker / SIMS)||Follow Solution steps.|
|Aveco A2C Exams Migration Application||Allowing Access to the Aveco A2C Exams Migration Application|
|MSN / Windows Messenger (Recommended alternative IM Client is called Pidgin)||Follow Solution steps.|
|Fronter A2C Exam Software||Follow Solution steps.|
|Google Drive Application||Google Drive™ doesn't connect through an authenticated proxy|
If the application listed above doesn't have its own article, use the steps below:
- Create a custom category for the appropriate domains. See our help topic, Creating custom categories.
Avoid using the Guardian category that the domain in question belongs to, as this may contains domains for other applications.
- Add the following to authentication exceptions:
- The new custom category created in step 1
- SSL /CRL category
- Software Updates category
See our help topic, Creating authentication exceptions.
If you continue to experience issues, see our help topic, Monitoring user activity. You can filter the Web filter logs by the IP of a test client, attempt to open the site / application, and add the domains that appear in the web filter logs to the authentication exceptions.