# [EPF-5] Week 15

Grandine on Windows has been [tested as a validator on Holesky Testnet](https://holesky.beaconcha.in/validator/1812058).

## This Week

* Holesky Testnet Eths staking at the launchpad for Holesky.
* Successfully run Grandine on Linux as a validator as a reference and start point for the verification on Windows.
* Fix reth running on Windows. Because CL and EL are used together to make a validator working. Reth is necessary to run one Windows to make the test successfully. But Reth would be crashed for database commit error 998 after second running on Windows. It is found there are repeated bug reports for reth running on Windwos, like [issue#3793](https://github.com/paradigmxyz/reth/issues/3793), [issue#5964](https://github.com/paradigmxyz/reth/issues/5964) ... Reth will close the issues if they are not active in recent 21 days. This causes the bug was not handled correctly.
* It is also found that Lighthouse has the stackoverflow bug on Windows. And some one say it was related to jemalloc. It may be not correct in that jemalloc is not used for Windows.
* Finally, after all problem are resolved I [successfully run Grandine on Windows as a validator on Holesky Testnet](https://holesky.beaconcha.in/validator/1812058).
* Primary investigate the test failures of consensus-test-specs tests. The main problem is that consensus-test-specs on Linux seems not have such failed tests on Windows. consensus-test-specs is an very big external repo. This may lead to some tests ignored.

## Next Week

* To fix the potential test failures.
* To run CI action on Windows.
* If above are OK, new documents about running on Windows will be up as well.