AppV 5 – HttpRequest sendRequest failed. 0x45500D27 – 0x80070057

Issue:

No Applications are downloading to clients from publishing server.

When trying to Syn-AppVPublishingServer, appverrorThe following errors will appear in AppV Admin Event Log on the client:-

HttpRequest sendRequest failed.
 URL: http://%5BAPPV PUB Server]:[PUB PORT]/
 Error code: 0x45500D27 – 0x80070057
Event ID:19203

&

Getting server publishing data failed.
 URL: http://%5BAPPV PUB Server]:[PUB PORT]/
 Error code: 0x45500D27 – 0x80070057
Event ID:19202

Accessing the XML file through http://%5BAPPV PUB Server]:[PUB PORT] displays the XML file correctly with assigned applications for the user.

Solution:

Reviewing Internet Explorer setting it was discovered that IE Proxy settings where blank although XML file was accessible and external sites where fine.

ie-blank

It was identified that there was a “\” included in the proxy exception (i.e server1.complany1.com/;) which was being published by Group Policy preference which appears to totally corrupt the IE exception or prevent the bypass for the local traffic from being applied.

Once this was removed the Proxy settings appeared in IE. It appears this may only appear to IE11 as older version seems to be able to handle the “\” ok.

 

After that AppV Sync was functioning and working again.

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