WebDAV not able to connect Online SharePoint
Find log below
2021-09-17 01:55:51.091 Host: *-my.sharepoint.com . 2021-09-17 01:55:51.091 Sending request-line and headers: . 2021-09-17 01:55:51.091 Doing DNS lookup on *-my.sharepoint.com... . 2021-09-17 01:55:51.216 req: Connecting to *.*.*.*:443 . 2021-09-17 01:55:51.236 Doing SSL negotiation. . 2021-09-17 01:55:51.313 Verifying certificate for "Microsoft Corporation, Redmond, Washington, US" with fingerprint ff:b7:ad:21:24:6d:3a:e6:c8:fb:48:81:ef:aa:5b:f8:26:a0:f3:75:88:fa:c6:55:02:62:72:94:be:3b:d2:0d and 08 failures . 2021-09-17 01:55:51.348 Certificate verified against Windows certificate store . 2021-09-17 01:55:51.349 Using TLSv1.2, cipher TLSv1.2: ECDHE-RSA-AES256-GCM-SHA384, 2048 bit RSA . 2021-09-17 01:55:51.349 Request sent; retry is 0. . 2021-09-17 01:55:51.703 [status-line] < HTTP/1.1 403 FORBIDDEN . 2021-09-17 01:55:51.703 Header Name: [content-length], Value: [13] . 2021-09-17 01:55:51.703 Header Name: [content-type], Value: [text/plain; charset=utf-8] . 2021-09-17 01:55:51.703 Header Name: [p3p], Value: [CP="ALL IND DSP COR ADM CONo CUR CUSo IVAo IVDo PSA PSD TAI TELo OUR SAMo CNT COM INT NAV ONL PHY PRE PUR UNI"] . 2021-09-17 01:55:51.703 Header Name: [x-sharepointhealthscore], Value: [1] . 2021-09-17 01:55:51.703 Header Name: [sprequestguid], Value: [bc4bf09f-7041-0000-a4fb-35cf2d03dd54] . 2021-09-17 01:55:51.703 Header Name: [request-id], Value: [bc4bf09f-7041-0000-a4fb-35cf2d03dd54] . 2021-09-17 01:55:51.703 Header Name: [ms-cv], Value: [n/BLvEFwAACk+zXPLQPdVA.0] . 2021-09-17 01:55:51.703 Header Name: [x-forms_based_auth_required], Value: [https://*-my.sharepoint.com/_forms/default.aspx?ReturnUrl=/_layouts/15/error.aspx&Source=/] . 2021-09-17 01:55:51.703 Header Name: [x-forms_based_auth_return_url], Value: [https://*-my.sharepoint.com/_layouts/15/error.aspx] . 2021-09-17 01:55:51.703 Header Name: [x-msdavext_error], Value: [917656; Access+denied.+Before+opening+files+in+this+location%2c+you+must+first+browse+to+the+web+site+and+select+the+option+to+login+automatically.] . 2021-09-17 01:55:51.703 Header Name: [x-idcrl_auth_params_v1], Value: [IDCRL Type="BPOSIDCRL", EndPoint="/_vti_bin/idcrl.svc/", RootDomain="sharepoint.com", Policy="MBI"] . 2021-09-17 01:55:51.703 Header Name: [x-powered-by], Value: [ASP.NET] . 2021-09-17 01:55:51.703 Header Name: [microsoftsharepointteamservices], Value: [16.0.0.21625] . 2021-09-17 01:55:51.703 Header Name: [x-content-type-options], Value: [nosniff] . 2021-09-17 01:55:51.703 Header Name: [x-ms-invokeapp], Value: [1; RequireReadOnly] . 2021-09-17 01:55:51.703 Header Name: [x-cache], Value: [CONFIG_NOCACHE] . 2021-09-17 01:55:51.704 Header Name: [x-msedge-ref], Value: [Ref A: 6B44235D89A6404E8548C4AC43062884 Ref B: CH1EDGE0906 Ref C: 2021-09-17T07:00:57Z] . 2021-09-17 01:55:51.704 Header Name: [date], Value: [Fri, 17 Sep 2021 07:00:57 GMT] . 2021-09-17 01:55:51.704 End of headers. . 2021-09-17 01:55:51.704 ah_post_send (#0), code is 403 (want 401), WWW-Authenticate is (none) . 2021-09-17 01:55:51.704 Request ends, status 403 class 4xx, error line: . 2021-09-17 01:55:51.704 403 FORBIDDEN . 2021-09-17 01:55:51.704 Request ends. . 2021-09-17 01:55:51.704 sess: Destroying session. . 2021-09-17 01:55:51.704 sess: Closing connection. . 2021-09-17 01:55:51.704 sess: Connection closed. * 2021-09-17 01:55:51.800 (EFatal) 403 FORBIDDEN * 2021-09-17 01:55:51.800 Connection failed.
