p0d
February 7, 2026, 4:02am
1
Hi,
I am having success using Cloudflare mTLS with Safari and Chrome on my Mac. Nextcloud files wont let me connect to the same domain and never promps me for a certificate. The browsers are using the cert I put in the keychain. Also, when I specifiy after the connection fail to use my working p12 file and password it says it can’t load the certificate.
Any help appreciated.
I think this is a feature that is no longer supported, see:
opened 07:49PM - 26 Mar 24 UTC
bug
### ⚠️ Before submitting, please verify the following: ⚠️
- [X] This is a **bug… **, not a question or a configuration issue.
- [X] This issue is **not** already reported on Github (I've searched it).
- [X] Nextcloud Server and Desktop Client are **up to date**. See [Server Maintenance and Release Schedule](https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule) and [Desktop Releases](https://nextcloud.com/install/#install-clients) for supported versions.
- [X] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/)
### Bug description
The Nextcloud Connection Wizard can't proceed with the account creation because it shows a 400 Bad Request error where the web server does not receive the SSL client certificate. It ist not possible to add the account.
This worked perfectly with the previous 3.9.3 client, but now with 3.12.2 it no longer works.
### Steps to reproduce
1. Add a new account (Account -> Add new)
2. Click "Log In" button
3. Add Server Address
4. Click on "Configure client-side TLS certificate"
5. Load pkcs12 client-side cert and enter cert password
6. Now appears the error
- Failed to connect to Nextcloud at https://????.com
Server replied “400 Bad Request” to GET https://????.com/status.php”
- Could not load certificate. Maybe wrong password?
### Expected behavior
It should be possible to add a new account to the client through the Nextcloud Connection Wizard which has an SSL client certificate in order connect to the Nextcloud server which requires client certificate authentication.
### Which files are affected by this bug
not files
### Operating system
Windows
### Which version of the operating system you are running.
Win 11
### Package
Other
### Nextcloud Server version
27.1.7
### Nextcloud Desktop Client version
3.12.2
### Is this bug present after an update or on a fresh install?
Fresh desktop client install
### Are you using the Nextcloud Server Encryption module?
Encryption is Disabled
### Are you using an external user-backend?
- [ ] Default internal user-backend
- [ ] LDAP/ Active Directory
- [ ] SSO - SAML
- [ ] Other
### Nextcloud Server logs
_No response_
### Additional info
_No response_