(Evohome) login failed with message: invalid_grant

[friso82]

Hi,

I just installed a new thermostat system (Honeywell Evohome) and noticed that I can also add this in Domoticz.

I created an account at international.mytotalconnectcomfort.com and managed to add my system to this account. I can see all zones in the Evohome app and are able to control the temperature.

When I try to add the system to Domoticz using the Web API method, I get the following in the logfile:

2022-08-31 10:27:35.952 Status: (Evohome) Worker started...
2022-08-31 10:27:45.961 Status: (Evohome) connect to Evohome server
2022-08-31 10:27:47.599 Error: (Evohome) login failed with message: invalid_grant
2022-08-31 10:29:47.672 Status: (Evohome) connect to Evohome server
2022-08-31 10:29:49.156 Error: (Evohome) login failed with message: invalid_grant

I tried changing the password (perhaps too many special characters or something) but this didn't solve the issue.

Any suggestions on how to debug or solve?

Thanks!
Friso

[friso82]

Anyone with any ideas? Looked at the source code but the only moment this invalid_grant issue is creates is when the token is no longer valid. Don't know how to solve this...

Code: Select all

if (!j_login.isMember("access_token"))
	{
		std::string szError;
		if (j_login.isMember("error"))
			szError = j_login["error"].asString();
		if (j_login.isMember("message"))
			szError = j_login["message"].asString();
		if (!szError.empty())
		{
			if (szError == "invalid_grant") // refresh token is no longer valid
				m_v2refresh_token = "";

			_log.Log(LOG_ERROR, "(%s) renewing login failed with message: %s", m_Name.c_str(), szError.c_str());
			return false;
		}

		_log.Log(LOG_ERROR, "(%s) renewing login returned unknown data", m_Name.c_str());
		return false;
	}

[domofreak]

Hello friso82,

It's not just the new install. I've been using the evohome with domoticz for two year now and it worked fine until last (somewhere) june. Evohome lost the connection to honeywell cloud somehow. Ones that has been restored I've been receiving the same message as you mention.
It could be that honeywell changes something on their side with te result that it is not possible to get the info using the domoticz plugin as is.

This would mean that the plugin needs an update. Haven't seen one yet. What I'm curious about is if more users experience this issue after a loss of the cloud connection or otherwise... like first install. Or, even beter, a permanent solution to this issue.

Br

[friso82]

Seems like we're the only people using Evohome with Domoticz Or no one else is experiencing the same issue...

[JeroNeo]

Same problem here. Beta environment Build 14498
devices last seen 2022-08-15 11:51:24

Best regards,

Jero

[friso82]

Created an issue on Github on this topic.

https://github.com/domoticz/domoticz/issues/5350

[JeroNeo]

Thank you, i will follow this one also.

Best regards,
Jero

[MikeyMan]

Seems like we're the only people using Evohome with Domoticz Or no one else is experiencing the same issue...

You're not, but i'm experiencing other issues.

Since yesterday it's crashing all of Domoticz.

See: viewtopic.php?t=39151

[terrarium]

Seems like we're the only people using Evohome with Domoticz Or no one else is experiencing the same issue...

Having the same problem. It was working fine until this morning as I changed the polling interval. Interval was 363 secs to overcome the "Request count limitation exceeded error" and adjusted it to 120 secs. After that the error "login failed with message: invalid_grant" occurred.
Domoticz beta 2022.1 (build 14534)

[MikeyMan]

The API needs a rework:

https://github.com/domoticz/domoticz/pull/1752

[friso82]

The API needs a rework:

https://github.com/domoticz/domoticz/pull/1752

The pull request you're referring to is five years old, or am I looking at it the wrong way?

[MikeyMan]

The API needs a rework:

https://github.com/domoticz/domoticz/pull/1752

The pull request you're referring to is five years old, or am I looking at it the wrong way?

Nope... It should have been picked up in the meantime, but it isn't...

Now it's an accident waiting to happen.

[terrarium]

I got it working again by doing some research on the same and similar error messages. Can't find the URL's but please try the following.

1. In your Evohome account, create a new password which meets the password requirements but contains only 1 special character, preferably a *
2. In Domoticz under hardware adjust "Evohome via web API" and disable "show schedule". You can leave "synchronize installation" and "show location" to on.
3. Set "poll interval" to be above 300 seconds.
4. adjust the password to what has been created under 1
5. click update


Please let me know if this works for you.

[JeroNeo]

Great! this workaround work for me as well.
Thank you.

Best regards,
Jero

[toldehi]

Had the same problem after upgrading Domoticz to 2022.2 and this solution worked for me as well
Thanks!

[John]

Yesterday evening the Webapi to the Evohome stopped, I get: (EvoHome) login failed with message: invalid_grant

I run Domoticz 2024 dot 3. Anyone else with this problem?

[John]

I solved the problem using: https://github.com/domoticz/domoticz/issues/6011
- In your Evohome account, create a new password which meets the password requirements but contains only 1 special character, preferably a *
- In Domoticz under hardware adjust "Evohome via web API" and disable "show schedule". You can leave "synchronize installation" and "show location" to on.
- Set "poll interval" to be above 300 seconds.
- adjust the password to what has been created under 1
- click update