Fix 'Could not get lock /var/lib/dpkg/lock' Error on Ubuntu/Debian
You try to install a package with apt or dpkg, and you get the error: Could not get lock /v...
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labWindows Security App Missing in Windows 11: How to Restore It
If you open Start and type 'Windows Security' but nothing appears, or you get an error when tryin...
Windows 11 Digital License Not Recognized: Fixes That Work
You see "Windows isn't activated" or "We can't activate Windows on this device" even though you h...
How to Fix PuTTY Connection Refused Error
You open PuTTY, enter your server IP or hostname, click Open, and get "Connection refused...
Fix Windows Activation Cannot Connect to Server Error
When you try to activate Windows and see the error "We can't activate Windows because we can't co...
How to Fix Windows Defender Not Opening on Mac
If you're running Windows on a Mac via Boot Camp or a virtual machine and Windows Defender won't ...