Qvx file read error, too many columns on scheduled reloads since May 2026 update

[Darius3]

Since updating to the May 2026 version, some of our scheduled tasks are failing with the error:

QVX file read error, too many columns.

However, when we manually reload the task it succeeds. Any ideas? 

[Darius3]

So far, I have added this setting in the engine properties on QMC based on a much older article

[Darius3]

Although this looked to of worked at first, the task has failed with the same error

[josrom1979]

Updated including Patch 6. Experiencing the same problem with tasks using Qlik Web Connector. Any solutions?

[henrikalmen]

I suggest you open a support case. https://customerportal.qlik.com/

[David_Friend]

@Darius3 does the number of columns match the XML header?