Bug 2479600

Using the instructions for Microsoft Azure CLI installations as example: https://learn.microsoft.com/en-us/cli/azure/install-azure-cli-linux?view=azure-cli-latest&pivots=dnf

Everything works as expected, DNF reports no issues, and the package azire-cli installs fine. But it breaks Gnome Software and causes it to crash shortly after launch!

Based on the output of "gnome-software --verbose" the crash happens after GsDnf5 function "gs_dnf5_repo_key_import_request_cb" tries 8 times to "Create a new session" for the Microsoft key but fails.

Meanwhile "dnf update --refresh" itself shows no errors regarding the repository and packages can be installed from it.

Reproducible: Always

Steps to Reproduce:
1. sudo rpm --import https://packages.microsoft.com/keys/microsoft-2025.asc
2. sudo dnf install -y https://packages.microsoft.com/config/rhel/10/packages-microsoft-prod.rpm
3. gnome-software --verbose
Actual Results:
Gnome Software crashes when it gets to checking the Microsoft key:

GsDnf5 gs_dnf5_repo_key_import_request_cb: key_id:'F748182B' user_ids:["Microsoft Corporation - General GPG Signer <gpgsign>"] key_fingerprint:'AA86F75E427A19DD33346403EE4D7792F748182B' key_url:'file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Microsoft' timestamp:1700038188
13:28:19:684 GsDnf5 Creating new session
13:28:19:685 GsDnf5 check-key-source: Failed to open new session: Failed to open session: Cannot open new session - maximal number of simultaneously opened sessions achieved.
GLib g_variant_is_object_path: assertion 'string != NULL' failed
GLib g_variant_new_object_path: assertion 'g_variant_is_object_path (object_path)' failed

Expected Results:
DNF itself doesn't have any problem with the Microsoft repository and it can be used to install packages, also the DNF Refresh shows no issues with the repo:

Microsoft Production       100% |   2.2 KiB/s |   2.3 KiB |  00m01s

Additional Information:
Removing the Microsoft key and repo fixes the issue:

1. rpmkeys --list
Copy the fingerprint for the Microsoft key, same as the one shown in gnome-software logs.
2. sudo rpmkeys --delete aa86f75e427a19dd33346403ee4d7792f748182b
3. sudo rm -f /etc/yum.repos.d/microsoft-prod.repo

Now running "gnome-software --verbose" works flawlessly.