Unable to deploy function app - ServerFarmCreationNotAllowed

hi andy b! thanks for posting this tricky one ))

the 'serverfarmcreationnotallowed' error can be super annoying.......

So, check if your subscription has the right permissions to create app service plans. sometimes, even as an admin, the subscription itself might have restrictions. go to the azure portal, open 'subscriptions', pick yours, then hit 'access control'. look for 'microsoft.web/serverfarms/write' permissions. if it's missing, u need someone with owner rights to add it. https://docs.microsoft.com/en-us/azure/role-based-access-control/role-assignments-portal

try deploying to an existing app service plan instead of creating a new one. this often bypasses the restriction. when u set up the function app, under 'hosting', pick an existing plan. if u don't have one, maybe a colleague can share one with u ))

worth looking into your azure policy too. some orgs block new app service plans to control costs. u can check this under 'azure policy' in the portal. if u see a deny rule for 'microsoft.web/serverfarms', that's the culprit. u’ll need a policy admin to tweak it. https://docs.microsoft.com/en-us/azure/governance/policy/overview

sometimes the region u picked has restrictions. try switching to a different one, like east us or west europe. sounds silly, but it works ))

always double-check quotas. go to 'subscriptions', then 'usage + quotas'. if u hit the limit for app service plans, that’s another reason for the error.

if all else fails, contact azure support. yes, it’s a bit of a wait, but they can lift backend restrictions fast. https://docs.microsoft.com/en-us/azure/azure-portal/supportability/how-to-create-azure-support-request

if u’re using terraform or arm templates, make sure the 'serverfarm' resource isn’t set to 'dynamic' or 'new'. hardcode an existing plan id instead.

hope this helps! let us know how it goes :)

Best regards,

Alex

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