Steam authorization failed for newly bought module

[Torbernite]

I bought the I-16 module in summer sale. When launching I keep seeing steam authorization failed error and authorization will last for 2 days, 23hrs, 59mins, the newly bought I-16 module is not authorized and would be disabled. When re-downloading I saw "downloaded file lost" error.

Update:

Solved after pausing antivirus defending (I'm using ESET), repairing steam library folder, and re-download the module. Sorry for bothering.

Besides, when checking antivirus log, I found that after moving DCS from my default D:/program files(x86)/steam/steamapp folder to my new E:/steamlibrary/steamapp folder, the downloading still involves earlier folder(D:/program files(x86)/steam/steamapp/downloading). This information may helps anyone with other problems later.

Edited June 24, 2022 by Torbernite

[Rudel_chw]

1 hour ago, Torbernite said:

This information may helps anyone with other problems later.

 

Thanks .. its because of this type of hard-to-detect issues, that I opted for excluding the DCS folders from my Antivirus reach (MS Defender)