Stuck on the Windows repair screen with an unresponsive USB mouse or keyboard after the latest update? It's a confirmed bug. Find out which systems are impacted and when to expect a fix. #WindowsUpdate #TechSupport #Windows11

https://pupuweb.com/why-is-usb-mouse-keyboard-stuck-after-the-latest-windows-update/

Microsoft Office 2016 & 2019 support ends Oct 14. Before commit to subscription, did you know you have other options? Learn how to keep current software secure or switch to a powerful, free alternative. Your next move is here. #TechTips #CyberSecurity

https://pupuweb.com/is-it-dangerously-unsafe-to-keep-using-microsoft-office-after-support-has-ended/

Locked out after the latest Windows update? If your smart card is failing, you're not alone. A recent patch is causing widespread authentication errors. Get the quick fix and understand the cause before it disrupts your workflow.

https://pupuweb.com/are-you-facing-smart-card-errors-after-the-latest-windows-update/

#WindowsUpdate #SmartCard #ITPro #TechSupport

Display disk usage in GB on Linux: use du -sh --block-size=1G . (GNU/Linux) or du -sg . (macOS/BSD). Simplest universal method: du -sh . auto-scales to GB. For scripts: set export BLOCKSIZE=1G. #Linux #CommandLine #DiskUsage

https://pupuweb.com/how-can-i-make-the-linux-du-command-report-disk-usage-in-gigabytes/

Find hostnames from IP addresses on Windows using: nslookup IP (reverse DNS), ping -a IP (quick lookup), nbtstat -a IP (local NetBIOS), or tracert IP (shows route + name). For automation: use FOR loops with nslookup. #Windows #Networking #CommandLine

https://pupuweb.com/how-can-i-find-a-hostname-from-an-ip-address-on-windows/

List Linux users and groups easily: getent passwd (all users), getent group (all groups), groups username (user's groups). For complete reports: cut -d: -f1 /etc/passwd | xargs groups. Bash shortcut: compgen -u or compgen -g. #Linux #SystemAdmin #CommandLine

https://pupuweb.com/how-can-i-easily-see-all-users-and-their-assigned-groups-in-linux/

View .cer certificate details fast: Windows—right-click > Open or use certutil -dump. Cross-platform—use openssl x509 -inform der -noout -text -in file.cer. PowerShell: New-Object X509Certificate2 then .Import(). #DigitalCertificate #OpenSSL #Windows

https://pupuweb.com/curious-about-a-cer-file-how-can-you-easily-view-its-digital-certificate-details/

SFTP uses port 22 (not 21) because it runs over SSH, not FTP. FTP uses port 21 (insecure), FTPS adds SSL/TLS encryption to FTP, while SFTP is a completely different SSH-based protocol. Connect with custom ports using -oPort=NUMBER. #SFTP #SSH #FileTransfer

https://pupuweb.com/what-port-does-sftp-really-use-and-why-is-it-confused-with-ftps-port-21/

On modern Linux (RHEL 7+), reboot and shutdown -r now are functionally identical via systemd. Use shutdown -r for scheduling and logging. Use reboot to avoid typos. Best practice: systemctl reboot. #Linux #SystemAdmin #ServerManagement

https://pupuweb.com/when-rebooting-a-linux-server-should-you-use-reboot-or-shutdown-for-maximum-safety/

Protect your data: choose AI tools with encryption, zero data retention, GDPR/CCPA compliance, and transparency. For sensitive work, use business plans with HIPAA compliance (transcription) or privacy-first APIs. Read policies carefully. #AIPrivacy #DataProtection #SecureAI

https://pupuweb.com/ai-tools-privacy-features/