I can only help you with a couple of points:
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Originally Posted by smaragdus  I cannot find a way to disable update check on start-up |
There is no way to disable update messages. I never liked this every session message concept but my request to have an option to delay to once a week or month or so was ignored several years back.
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Originally Posted by smaragdus ... and with forced Windows shut-down it loses its data and settings. |
Forcing Windows shutdown will always risk losing data and settings. It's something that should only be done as a last resort.
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Originally Posted by smaragdus I am still using WireShare version 5.6.5 since version 5.6.6 had connection problems ... |
There will always be a version that does not work well on some people's systems. There are often workarounds but should be done with care.