SeaDrive is not displayed in Explorer

Hi,
I have been working successfully with my SeaFile installation for some time now.

On a Windows 10 computer, the program SeaDrive ran without any problems so far. Now a new user account has been created. SeaDrive installed and I logged in with the appropriate credentials.

I see that SeaDrive is active in the taskbar. But when I open the Explorer I can’ t find the SeaDrive drive. What could be the reason for this?
On all other PCs, it works fine.

Content from seadrive.log

[07/05/22 10:26:31] switching account to https://xxx.com info@xyz.com.
[07/05/22 10:26:31] Failed to create sync root C:\Program Files (x86)\Seafile\seadrive_root\USERNAME: Permission denied.
[07/05/22 10:26:31] Failed to connect sync root for https://xxx.com:info@xyz.com
[07/05/22 10:26:32] Cloning repo AUSTAUSCH(273fc7cf-dcb3-408c-9d8d-a91d1f4e87dc).
[07/05/22 10:26:32] Repo 'AUSTAUSCH' sync state transition from 'synchronized' to 'get token'.
[07/05/22 10:26:32] Cloning repo 0x.PROJECT(55bc45f3-f084-4538-8196-cfea0e5b00fa).
[07/05/22 10:26:32] Repo '0x.PROJECT' sync state transition from 'synchronized' to 'get token'.
[07/05/22 10:26:32] Repo '0x.PROJECT' sync state transition from 'get token' to 'downloading'.
[07/05/22 10:26:32] Download with HTTP sync protocol version 2.
[07/05/22 10:26:32] Transfer repo '55bc45f3': ('normal', 'init') --> ('normal', 'check')
[07/05/22 10:26:32] Repo 'AUSTAUSCH' sync state transition from 'get token' to 'downloading'.
[07/05/22 10:26:32] Download with HTTP sync protocol version 2.
[07/05/22 10:26:32] Transfer repo '273fc7cf': ('normal', 'init') --> ('normal', 'check')
[07/05/22 10:26:32] [07/05/22 10:26:32] Transfer repo '55bc45f3': ('normal', 'check') --> ('normal', 'commit')
Transfer repo '273fc7cf': ('normal', 'check') --> ('normal', 'commit')
[07/05/22 10:26:32] Transfer repo '273fc7cf': ('normal', 'commit') --> ('normal', 'fs')
[07/05/22 10:26:32] Transfer repo '55bc45f3': ('normal', 'commit') --> ('normal', 'fs')
[07/05/22 10:26:33] Transfer repo '55bc45f3': ('normal', 'fs') --> ('finished', 'finished')
[07/05/22 10:26:33] Repo '0x.PROJECT' sync state transition from 'downloading' to 'load repo'.
[07/05/22 10:26:33] CfCreatePlaceholders failed on C:\Program Files (x86)\Seafile\seadrive_root/Meine Bibliotheken/0x.PROJECT: Das System kann die angegebene Datei nicht finden.
[07/05/22 10:26:33] Transfer repo '273fc7cf': ('normal', 'fs') --> ('finished', 'finished')
[07/05/22 10:26:38] Starting SeaDrive client 2.0.22
[07/05/22 10:26:38] rpc server started.
[07/05/22 10:26:38] Removing store C:/Users/PC_Username/seadrive/data\deleted_store\commits\273fc7cf-dcb3-408c-9d8d-a91d1f4e87dc
[07/05/22 10:26:38] Removing store C:/Users/PC_Username/seadrive/data\deleted_store\commits\55bc45f3-f084-4538-8196-cfea0e5b00fa
[07/05/22 10:26:38] Removing store C:/Users/PC_Username/seadrive/data\deleted_store\fs\273fc7cf-dcb3-408c-9d8d-a91d1f4e87dc
[07/05/22 10:26:40] start to serve on pipe client
[07/05/22 10:26:41] start to serve on pipe client
[07/05/22 10:26:41] switching account to https://xxx.com info@xyz.com.
[07/05/22 10:26:41] Failed to create sync root C:\Program Files (x86)\Seafile\seadrive_root\USERNAME: Permission denied.
[07/05/22 10:26:41] Failed to connect sync root for https://xxx.com:info@xyz.com
[07/05/22 10:26:41] start to serve on pipe client
[07/05/22 10:26:41] start to serve on pipe client
[07/05/22 10:27:08] Bad response code for GET https://xxx.com/seafhttp/accessible-repos/?repo_id=55bc45f3-f084-4538-8196-cfea0e5b00fa: 404.
[07/05/22 10:27:38] cache size limit is 10000000000