# Your session has expired. Please sign in again (version 9.1.0 and 8.5.5)
**URL:** https://forums.concretecms.org/t/your-session-has-expired-please-sign-in-again-version-9-1-0-and-8-5-5/3030
**Category:** Using Concrete / Help
**Created:** [May 15, 2022, 12:35am UTC](https://forums.concretecms.org/t/your-session-has-expired-please-sign-in-again-version-9-1-0-and-8-5-5/3030 "2022-05-15T00:35:13Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@grafenno](https://forums.concretecms.org/u/grafenno)
#### Post date: [May 15, 2022, 12:35am UTC](https://forums.concretecms.org/t/your-session-has-expired-please-sign-in-again-version-9-1-0-and-8-5-5/3030/1 "2022-05-15T00:35:13Z")
Hi guys, this past week made a migration from WHM to CWP.
All apps works fine (roundcube, spam assassin, mautic, boxbilling, crater etc) and Concrete either.
But, when I login I got the message: “Your session has expired. Please sign in again”.
And couldn’t enter to admin.
Anyone knows whats is going on here?
Tx
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### Author:  [@grafenno](https://forums.concretecms.org/u/grafenno)
#### Post date: [May 15, 2022, 4:18am UTC](https://forums.concretecms.org/t/your-session-has-expired-please-sign-in-again-version-9-1-0-and-8-5-5/3030/2 "2022-05-15T04:18:28Z")
Hi there.
Just found this topic
> **[Errors on login - concrete5](https://archive.concretecms.org/community/forums/customizing_c5/errors-on-login)**
>
> Hi all,
>
> I recall searching for this before and finding a solution, but I looked again this morning and didn't find anything easily. So, apologies if this has been addressed on the forum.
>
> Literally every time I go to login as an admin on my...
And the problem is caused by Varnish Cache, so I disable it from my VPS and the login issue disappear.
Now I can login into admin site.
I don’t know exactly what feature of Varnish Cache make this issue, when I found it I come here to tell about.
Greetings from America/Sao\_Paulo