Accrobat Reader shows current version, but check updates says there's an update that fails

I have uninstalled Reader, downloaded a fresh installer, and installed.

Version shows as: 25.1.21288.0

Help > Check for updates - says an update is available.

Sits on Downloading Updates, with the bar not oving from the beginning.

AdobeARM.log shows BITS errors. See:

[2026-04-02 00:17:14:0929] Adobe ARM 1.824.460.1149 logging started.
[2026-04-02 00:17:14:0929] Command Line: /PRODUCT:Acrobat /VERSION:25.0 /MODE:1
[2026-04-02 00:17:14:0976] ProductCode: {AC76BA86-1033-1033-7760-BC15014EA700}
[2026-04-02 00:17:14:0976] ProductName: Adobe Acrobat (64-bit)
[2026-04-02 00:17:14:0976] ProductVersion: 25.001.21288
[2026-04-02 00:17:14:0976] ProductUACPatching: enabled
[2026-04-02 00:17:15:0182] Using registered preference AUTO_ALL
[2026-04-02 00:17:15:0300] ARMDownloader::BITS_Error::GetErrorDescription() error: -2147009791
[2026-04-02 00:17:15:0300] ARMDownloader::BITS_Error::GetErrorContextDescription() error: -2147009791
[2026-04-02 00:17:45:0958] ARMDownloader::BITS_Error::GetErrorDescription() error: -2147009791
[2026-04-02 00:17:45:0958] ARMDownloader::BITS_Error::GetErrorContextDescription() error: -2147009791
[2026-04-02 00:17:45:0958] all BITs attempts failed
[2026-04-02 00:17:45:0958]  Error Code: -2147009791
[2026-04-02 00:17:45:0958] ** Setting Error Condition: 140000
[2026-04-02 00:17:45:0974] BITs failed, download manifest Job is not in Transferred state
[2026-04-02 00:17:46:0661] MDOV1615
[2026-04-02 00:17:46:0665] New file object: AcroRdrDCx64Upd2600121346_incr.msi
[2026-04-02 00:19:35:0919] ARMDownloader::BITS_Error::GetErrorDescription() error: -2147009791
[2026-04-02 00:19:35:0919] ARMDownloader::BITS_Error::GetErrorContextDescription() error: -2147009791
[2026-04-02 00:20:06:0552] ARMDownloader::BITS_Error::GetErrorDescription() error: -2147009791
[2026-04-02 00:20:06:0553] ARMDownloader::BITS_Error::GetErrorContextDescription() error: -2147009791
[2026-04-02 00:20:06:0555] all BITs attempts failed
[2026-04-02 00:20:06:0555]  Error Code: -2147009791
[2026-04-02 00:20:06:0555] ** Setting Error Condition: 140000
[2026-04-02 00:20:06:0565] BITs failed, download manifest Job is not in Transferred state
[2026-04-02 00:20:06:0624] valid after BB download: C:\Users\MLazarus\AppData\Local\Adobe\ARM\S\ArmManifest3.msi
[2026-04-02 00:20:06:0659] Newer version ARM update is not available
[2026-04-02 00:20:06:0709] ARMDownloader::BITS_Error::GetErrorDescription() error: -2147009791
[2026-04-02 00:20:06:0709] ARMDownloader::BITS_Error::GetErrorContextDescription() error: -2147009791
[2026-04-02 00:26:12:0129] User canceled download
[2026-04-02 00:26:12:0524] ARM returns ERROR_SUCCESS
[2026-04-02 00:26:12:0524] Adobe ARM 1.824.460.1149 logging finished.

Tried multiple times.