> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/ras-rest-api-guide/api-reference/publishing/apps/file-extensions.md).

# File Extensions

## Create

> Add a file extension for the specified published RD Session Host application.

```json
{"openapi":"3.0.1","info":{"title":"Parallels RAS - REST API v1.0","version":"1.0"},"paths":{"/api/PubItems/{id}/Apps/FileExtensions":{"post":{"tags":["3-Publishing/Applications//File Extensions"],"summary":"Create","description":"Add a file extension for the specified published RD Session Host application.","operationId":"41e7bf2e-7a05-4ec2-b9e9-b48f70963c4a","parameters":[{"name":"id","in":"path","description":"ID of the published RD Session Host application to be updated","required":true,"schema":{"type":"integer","format":"int32"}}],"requestBody":{"description":"File extension for published RD Session Host application to be added","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/SetPubItemExtension"}}}},"responses":{"201":{"description":"Created"},"401":{"description":"Unauthorized","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}},"404":{"description":"Not Found","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}}}}}},"components":{"schemas":{"SetPubItemExtension":{"required":["extension"],"type":"object","properties":{"extension":{"type":"string","description":"<para type=\"description\">The file extension that will be added/modified.</para>","nullable":true}},"additionalProperties":false,"description":"<para type=\"synopsis\">Update a file extension of the published resource</para>\r\n<para type=\"description\"></para>"},"ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}}}
```

## Update

> Modify properties of a file extension for the specified published RD Session Host application.

```json
{"openapi":"3.0.1","info":{"title":"Parallels RAS - REST API v1.0","version":"1.0"},"paths":{"/api/PubItems/{id}/Apps/FileExtensions/{extension}":{"put":{"tags":["3-Publishing/Applications//File Extensions"],"summary":"Update","description":"Modify properties of a file extension for the specified published RD Session Host application.","operationId":"51a35315-651d-438c-9926-fb2cb815dc43","parameters":[{"name":"id","in":"path","description":"ID of the published RD Session Host application to be updated","required":true,"schema":{"type":"integer","format":"int32"}},{"name":"extension","in":"path","description":"Name of the file extension that will be updated","required":true,"schema":{"type":"string"}}],"requestBody":{"description":"File extension for published RD Session Host application to be updated","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/SetPubAppFileExt"}}}},"responses":{"204":{"description":"No Content"},"401":{"description":"Unauthorized","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}},"404":{"description":"Not Found","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}}}}}},"components":{"schemas":{"SetPubAppFileExt":{"required":["extension"],"type":"object","properties":{"extension":{"type":"string","description":"<para type=\"description\">The file extension that will be added/modified.</para>","nullable":true},"enabled":{"type":"boolean","description":"<para type=\"description\">Whether the file extension should be enabled or disabled for the specified published app.</para>","nullable":true},"parameters":{"type":"string","description":"<para type=\"description\">File extension parameters for the specified published app.</para>","nullable":true}},"additionalProperties":false,"description":"<para type=\"synopsis\">Update a file extension of the published application</para>\r\n<para type=\"description\"></para>"},"ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}}}
```

## Delete

> Remove a file extension from the specified published RD Session Host application.

```json
{"openapi":"3.0.1","info":{"title":"Parallels RAS - REST API v1.0","version":"1.0"},"paths":{"/api/PubItems/{id}/Apps/FileExtensions/{extension}":{"delete":{"tags":["3-Publishing/Applications//File Extensions"],"summary":"Delete","description":"Remove a file extension from the specified published RD Session Host application.","operationId":"4c4e972c-8ce8-4ea7-a2ad-943448e17d19","parameters":[{"name":"id","in":"path","description":"ID of the published RD Session Host application to be updated","required":true,"schema":{"type":"integer","format":"int32"}},{"name":"extension","in":"path","description":"The file extension that will be deleted","required":true,"schema":{"type":"string"}}],"responses":{"204":{"description":"No Content"},"401":{"description":"Unauthorized","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}},"404":{"description":"Not Found","content":{"application/json; api-version=1.0":{"schema":{"$ref":"#/components/schemas/ProblemDetails"}}}}}}}},"components":{"schemas":{"ProblemDetails":{"type":"object","properties":{"type":{"type":"string","nullable":true},"title":{"type":"string","nullable":true},"status":{"type":"integer","format":"int32","nullable":true},"detail":{"type":"string","nullable":true},"instance":{"type":"string","nullable":true}},"additionalProperties":{}}}}}
```


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