Update fails. Can't install any software !
4305
How do I fix a "Problem with MergeList" or "status file could not be parsed" error when trying to do an update?
119920
Failed upgrade from Ubuntu 19.10 to 20.04 "Please update the microcode"
134080
Still can't upgrade? Is there a new delay?
11909
404 error with apt-get update, Don't have any PPA's
12614
Upgrade problem
128740
Unable to Install Update; An error occurred installing iOS 8.2
62476
E: Package '' has no installation candidate
144507
No facility exists in Update Manager to upgrade to a new version, why?
13107
How to install updates via command line?
147700
Samsung Galaxy S4 SCH-I545 official updates via Kies fails with: "Software update is temporarily unavailable. Try again later."
109856
Installation error: INSTALL_FAILED_OLDER_SDK
43579
I cannot install new packages: "Could not get lock /var/lib/dpkg/lock"
3523
What does "Package  has no installation candidate" mean?
63176
How can I update to Ubuntu 21.04?
65099
Unable to install any updates through update manager/apt-get upgrade
132316
How can I find out what went wrong with a failed Windows update?
44638
I can't install or update Apps from Play Store: Error 905. How to fix?