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MCAS session policy with Conditional Access is blocking accessin external shares
Hi, I have a strange behavior between a test tenant and qualification tenant. Technical context On the source tenant MCAS is activated with session policy for all the MS services. On the targe...
- For people to know how it ends, this was a bug of MCAS in CASB proxy mode where the user was not redirect to the correct destination page. This has been solved by MS since.
Regards,
Keith_Fleming
Microsoft
MicrosoftHi Julien_Hacquard,
If the user is accessing from a shared link and SPO is authenticating the user the session will not redirect. You can use Purview DLP rules to block external access in this case.
Keith_Fleming
Thanks for your message.
In my case i would like be redirected to the shared resource. The only solution found is to deactivate conditional access for MCAS session policy on the user. So i decrease our security to be able to collaborate with other tenants; This is not a desirable solution.