# \#iis

**URL:** https://community.cdata.com/tag/iis/384.md

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## [Incoming requests greater than 30 MB are rejected with an HTTP error 413 “Request Entity Too Large” when hosted in IIS](https://community.cdata.com/t/incoming-requests-greater-than-30-mb-are-rejected-with-an-http-error-413-request-entity-too-large-when-hosted-in-iis/962)

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**Author:** [@James\_B](https://community.cdata.com/u/James_B)\
**Replies:** 0\
**Last updated:** [December 3, 2024, 3:41pm UTC](https://community.cdata.com/t/incoming-requests-greater-than-30-mb-are-rejected-with-an-http-error-413-request-entity-too-large-when-hosted-in-iis/962 "2024-12-03T15:41:59Z")

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When receiving large AS2 transmissions from my partners, any transmission of a payload greater than 30 MB that is not sent via Chunked-Transfer-Encoding is rejected with an error at the web server: 413 “Request Entity…

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## [Best practices for Migrating CData Sync from a previous .NET version to V24 Cross-Platform in an IIS Deployment](https://community.cdata.com/t/best-practices-for-migrating-cdata-sync-from-a-previous-net-version-to-v24-cross-platform-in-an-iis-deployment/809)

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**Author:** [@Bukuroshe\_D](https://community.cdata.com/u/Bukuroshe_D)\
**Replies:** 0\
**Last updated:** [July 1, 2024, 5:35pm UTC](https://community.cdata.com/t/best-practices-for-migrating-cdata-sync-from-a-previous-net-version-to-v24-cross-platform-in-an-iis-deployment/809 "2024-07-01T17:35:24Z")

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Starting with Sync 2024, the .NET edition of the application is deprecated. A general guide about “Migrating CData Sync from the .NET Edition to the Cross-Platform Edition” can be found on the following article: Migrati…

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## [Error opening file for writing (SQLite.Interop.dll) when trying to install upgrade for CData Arc](https://community.cdata.com/t/error-opening-file-for-writing-sqlite-interop-dll-when-trying-to-install-upgrade-for-cdata-arc/756)

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**Author:** [@anonymous](https://community.cdata.com/u/anonymous)\
**Replies:** 0\
**Last updated:** [June 7, 2024, 9:52pm UTC](https://community.cdata.com/t/error-opening-file-for-writing-sqlite-interop-dll-when-trying-to-install-upgrade-for-cdata-arc/756 "2024-06-07T21:52:39Z")

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When trying to install an upgrade to CData Arc, an error is encountered midway through the installer: Error opening file for writing: %InstallPath%\\www\\bin\\x64\\SQLite.Interop.dll Click Abort to stop the installa…

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## [HTTP 503 Service Unavailable when hosting CData Arc in IIS, but the same port works for the embedded webserver](https://community.cdata.com/t/http-503-service-unavailable-when-hosting-cdata-arc-in-iis-but-the-same-port-works-for-the-embedded-webserver/579)

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**Author:** [@anonymous](https://community.cdata.com/u/anonymous)\
**Replies:** 0\
**Last updated:** [December 19, 2023, 7:01pm UTC](https://community.cdata.com/t/http-503-service-unavailable-when-hosting-cdata-arc-in-iis-but-the-same-port-works-for-the-embedded-webserver/579 "2023-12-19T19:01:07Z")

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When attempting to host CData Arc in IIS, the service does not start successfully. IIS does not appear to report any issues when starting the service, but when you attempt to reach the site, you will see an HTTP 503 Serv…