# Error computing large matrices despite high maximum\_routes

**URL:** https://ask.openrouteservice.org/t/error-computing-large-matrices-despite-high-maximum-routes/3366
**Category:** openrouteservice
**Created:** [November 29, 2021, 8:01pm UTC](https://ask.openrouteservice.org/t/error-computing-large-matrices-despite-high-maximum-routes/3366 "2021-11-29T20:01:44Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![davideps](https://ask.openrouteservice.org/letter_avatar_proxy/v4/letter/d/dc4da7/32.png) [@davideps](https://ask.openrouteservice.org/u/davideps)
#### Post date: [December 2, 2021, 12:18pm UTC](https://ask.openrouteservice.org/t/error-computing-large-matrices-despite-high-maximum-routes/3366/5 "2021-12-02T12:18:53Z")

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Thank you @jschnell. I don’t know what caused the connection error but I am no longer seeing it. The host and port were correct and the service was running. ORS then computed the large matrices for driving but failed for walking. I saw this [post](https://ask.openrouteservice.org/t/6099-unable-to-compute-a-distance-duration-matrix-foot-walking/2650/3) and increased the maximum\_visited\_nodes from 10,000,000 to 100,000,000, which solved the issue. Thank you again for your help and patience!

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