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xRM-Portals Cryptographic Operation Error - settings.xml corrupted

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Posted on by mark_us

I have a running installation of xRM Portals with Dynamics 365 8.2 On-premise. Everything works fine. ButI have the problem, that the settings.xml file gets corrupted every night - I can't explain why. I have the problem described in the following blogpost:

https://dynamics365authority.com/Blog/adxcrm-portal-cryptographic-operation-error-while-opening-adx-portal-from-iis

After deleting the settings.xml and reconfiguration everything works fine. But just for one day. After returning to the office the next day, the settings are again broken. What can I do to fix this?

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mark_us 95 on at

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RE: xRM-Portals Cryptographic Operation Error - settings.xml corrupted

Due to daily app pool recycling we had a new auto generated machine key every day. With a dedicated machine key in the web.config this problem is solved! The password hash uses the machine key.