Re: [Evolution] exchange calendar

[Milan Crha <mcrha redhat com>]

On Fri, 2018-08-17 at 09:08 -0600, William Dossett via evolution-list
wrote:
> The calendar is listed, but has an error message, unable to connect
> to backend factory for source (long guid type number) and extension
> calendar cannot be found.

        Hi,
such messages usually mean that the background processes do not have
loaded extensions to process those sources. It can happen when you
install some 3rd-party extension (like evolution-ews) and do not
restart those background processes. The restart is not needed on more
recent versions, but there are still cases when this can occur.

Try this:
a) close evolution
b) run from terminal:
   $ /usr/libexec/evolution-source-registry
c) wait for 3 seconds (not needed that long, but just in case)
d) run from another terminal:
   $ /usr/libexec/evolution-addressbook-factory -w
e) wait for 3 seconds
f) run from another terminal:
   $ /usr/libexec/evolution-calendar-factory -w
g) wait for 3 seconds
e) run evolution from a terminal:
   $ evolution

The actual paths to the processes can differ in your distribution.

Each terminal will show you runtime warnings, if any. Those might help
you to identify the issue. As had been suggested in another message in
this thread, you can also restart the machine, but as you asked on
Thursday, I guess you already restarted your machine.

        Bye,
        Milan