diff --git a/Sources/NextcloudKit/NextcloudKit+WebDAV.swift b/Sources/NextcloudKit/NextcloudKit+WebDAV.swift
index 3889d4e0..f10e3f9e 100644
--- a/Sources/NextcloudKit/NextcloudKit+WebDAV.swift
+++ b/Sources/NextcloudKit/NextcloudKit+WebDAV.swift
@@ -27,7 +27,7 @@ public extension NextcloudKit {
                       completion: @escaping (_ account: String, _ ocId: String?, _ date: Date?, _ responseData: AFDataResponse<Data>?, _ error: NKError) -> Void) {
         guard let url = serverUrlFileName.encodedToUrl,
               let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
-              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, nil, nil, .urlError) }
         }
         let method = HTTPMethod(rawValue: "MKCOL")
@@ -105,7 +105,7 @@ public extension NextcloudKit {
                             completion: @escaping (_ account: String, _ responseData: AFDataResponse<Data>?, _ error: NKError) -> Void) {
         guard let url = serverUrlFileName.encodedToUrl,
               let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
-              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, .urlError) }
         }
         var urlRequest: URLRequest
@@ -185,7 +185,7 @@ public extension NextcloudKit {
                           completion: @escaping (_ account: String, _ responseData: AFDataResponse<Data>?, _ error: NKError) -> Void) {
         guard let url = serverUrlFileNameSource.encodedToUrl,
               let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
-              var headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              var headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, .urlError) }
         }
         let method = HTTPMethod(rawValue: "MOVE")
@@ -278,7 +278,7 @@ public extension NextcloudKit {
                           completion: @escaping (_ account: String, _ responseData: AFDataResponse<Data>?, _ error: NKError) -> Void) {
         guard let url = serverUrlFileNameSource.encodedToUrl,
               let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
-              var headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              var headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, .urlError) }
         }
         let method = HTTPMethod(rawValue: "COPY")
@@ -378,7 +378,7 @@ public extension NextcloudKit {
         var serverUrlFileName = serverUrlFileName
         guard let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
               let url = serverUrlFileName.encodedToUrl,
-              var headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              var headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, nil, .urlError) }
         }
         if depth == "0", serverUrlFileName.last == "/" {
@@ -855,7 +855,7 @@ public extension NextcloudKit {
                         taskHandler: @escaping (_ task: URLSessionTask) -> Void = { _ in },
                         completion: @escaping (_ account: String, _ files: [NKFile]?, _ responseData: AFDataResponse<Data>?, _ error: NKError) -> Void) {
         guard let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
-              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, nil, .urlError) }
         }
         guard let url = (serverUrl + "/" + nkSession.dav).encodedToUrl else {
@@ -958,7 +958,7 @@ public extension NextcloudKit {
                      taskHandler: @escaping (_ task: URLSessionTask) -> Void = { _ in },
                      completion: @escaping (_ account: String, _ responseData: AFDataResponse<Data>?, _ error: NKError) -> Void) {
         guard let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
-              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, .urlError) }
         }
         let serverUrlFileName = nkSession.urlBase + "/" + nkSession.dav + "/files/" + nkSession.userId + "/" + fileName
@@ -1042,7 +1042,7 @@ public extension NextcloudKit {
                           taskHandler: @escaping (_ task: URLSessionTask) -> Void = { _ in },
                           completion: @escaping (_ account: String, _ files: [NKFile]?, _ responseData: AFDataResponse<Data>?, _ error: NKError) -> Void) {
         guard let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
-              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              let headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, nil, .urlError) }
         }
         let serverUrlFileName = nkSession.urlBase + "/" + nkSession.dav + "/files/" + nkSession.userId
@@ -1137,7 +1137,7 @@ public extension NextcloudKit {
                       taskHandler: @escaping (_ task: URLSessionTask) -> Void = { _ in },
                       completion: @escaping (_ account: String, _ items: [NKTrash]?, _ responseData: AFDataResponse<Data>?, _ error: NKError) -> Void) {
         guard let nkSession = nkCommonInstance.nksessions.session(forAccount: account),
-              var headers = nkCommonInstance.getStandardHeaders(account: account, options: options) else {
+              var headers = nkCommonInstance.getStandardHeaders(account: account, options: options, contentType: "application/xml", accept: "application/xml") else {
             return options.queue.async { completion(account, nil, nil, .urlError) }
         }
         var serverUrlFileName = nkSession.urlBase + "/" + nkSession.dav + "/trashbin/" + nkSession.userId + "/trash/"