253 step-by-step IT guides and fixes across Windows Server, Microsoft 365, Teams, Windows, Docker, and virtualization.
Fix a full Proxmox local-lvm: see why the thin pool fills, check usage with lvs and df, delete unused disks and snapshots, move storage, and stop it recurring.
VirtualBox crawling on Windows 11? Hyper-V, Memory Integrity, and WSL2 steal VT-x. Learn what to disable, how to allocate resources, and enable nested paging.
Back up Docker named volumes the reliable way: tar a volume via a temp container, restore it, dump databases properly, schedule it, and move data between hosts.
Windows 11 needs TPM 2.0. Check it with tpm.msc or Get-Tpm, then enable Intel PTT or AMD fTPM in firmware, turn on Secure Boot, and avoid a BitLocker lockout.
Manage guest access in Microsoft Teams: how it differs from external access, enabling it in Entra and Teams admin, adding a guest, setting permissions, and staying secure.
Turn on multi-factor authentication in Microsoft 365: when to use security defaults, Conditional Access, or per-user MFA, plus authenticator setup, rollout, and break-glass accounts.
Clients stuck on 169.254 addresses? Work through DHCP scope state, AD authorization, pool exhaustion, conflicts, relay/IP helper, and firewall to fix it fast.
Move VMware VMs to Proxmox: export OVF/VMDK, import with qm importovf and importdisk, convert VMDK to qcow2, fix VirtIO drivers, and boot the migrated guest.
Stuck with orphaned AVHDX files after a failed backup or checkpoint? Learn what AVHDX is and two safe ways to merge the chain back into your VHDX without data loss.