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Hi @Mkralev,
Welcome to the community.
Did this happen immediately after the update?
After trying uliwoolys suggestion, if it works, make sure all your apps are up to date with the latest versions. Could be an app conflict.
If it doesn't, you may have to run a software repair before contacting your local support team, as the update may not have installed itself correctly.
In general, the warranty will only apply for the country it was originally sold in. Only your local support team can advise you on the warranty terms for your region however.