# KNIME SQL Server connection no longer working

**URL:** <https://forum.knime.com/t/knime-sql-server-connection-no-longer-working/46104>\
**Category:** KNIME Analytics Platform\
**Created:** [August 18, 2022, 11:45am UTC](https://forum.knime.com/t/knime-sql-server-connection-no-longer-working/46104 "2022-08-18T11:45:46Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![ArjenEX](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/a/97f17d/32.png) [@ArjenEX](https://forum.knime.com/u/ArjenEX)\
**Post date:** [August 18, 2022, 11:53am UTC](https://forum.knime.com/t/knime-sql-server-connection-no-longer-working/46104/2 "2022-08-18T11:53:39Z")

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Hi @JWebb

Closing and re-opening your KNIME should resolve it. This is a known thing with the V4.6 update.

> [@DBDriver Registry Error after updating to KNIME 4.6](https://forum.knime.com/t/dbdriver-registry-error-after-updating-to-knime-4-6/44431):
>
> I just updated to KNIME 4.6, and now I can’t connect to my Microsoft SQL Server Database. Here’s a list of some of the errors and warnings that populate when I try to run my workflow. Any suggestions on how to fix this? ERROR DBDriverRegistry Database driver wrapper creation failed for driver (H2) "H2". ERROR DBDriverRegistry Failed to load built-in database driver (H2) "H2" from extension org.knime.database.extensions. ERROR DBDriverRegistry Databas…

> [@MYSQL Drivers Un-Installed](https://forum.knime.com/t/mysql-drivers-un-installed/44194):
>
> Hello, When I installed the new version of KNIME (4.6.0), all the previous installed MYSQL drivers were un-installed. As a result, 90% of my KNIME workflows cannot be run, because I cannot connect to MYSQL. Please help, Alex

> [@Database Driver isnt´t load after installing the new KNIME Version 4,6](https://forum.knime.com/t/database-driver-isnt-t-load-after-installing-the-new-knime-version-4-6/44467):
>
> Hi, i have a problem after installing the new Version of KNIME 4.6. I can´t choose the special Database Driver in the DB Connector node. Thank you in advance for your help Greetings

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