Error code 2755 on Windows Server 2016
Piotr Wycichowski
3-16-21
Operating system: macOS
Hi,

When we try to install SERP 8.5 210213 build 85360166 on Windows Server 2016, the process stops with such message:
The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2755.
Can anybody help me with this?

/Piotr Wycichowski
MAQSIMUM
Piotr Wycichowski
3-19-21
Maybe it is important: such behaviour occurs, when we are trying to UPDATE existing installation from version 8.5 200707

/Piotr Wycichowski
MAQSIMUM
Dejan R.
4-15-21
Hi Piotr.

Thank you reporting the issue. Can you pleas test in the latest build (85360175) and if the issue still persist, then please report as a bug using Issue tracking.

Regards
Leave Comment
You can subscribe to notifications for this post by selecting the 'star' icon on the top right corner of the post.
Back to the list
Latest Posts
Andis Blicāns, Grasko
Thank You for answer. In this case I used SSLNoCertificateValidation = true; SendWebRequest SSLNoCertificateValidation = false; ...
23:01 24 Mar 2026
Gatis Jansons
Hi, Paul. Sounds like you're talking about REST API. And that your are overwriting data with older values if B managed to read record before A finished to update it. Classic conflict resolution ...
14:53 19 Mar 2026